How Good Is a Hamster’s Eyesight? Vet-Verified Facts

How good is a hamster’s eyesight? This is a question that many hamster owners and enthusiasts find themselves asking. The short answer is: not very good during daytime and better with low light conditions. Hamsters have well-developed senses of smell and hearing, which help them navigate the world. However, there’s much more to this story. In this comprehensive guide, we will delve into the fascinating world of hamster anatomy, focusing on their eyesight and providing useful tips to ensure your furry friend stays healthy.

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Basic Hamster Eye Anatomy

Hamster eyes are unique in their structure, which is perfectly adapted to their nocturnal lifestyle. They are small and protruding, and their location gives hamsters a field of view of approximately 270 degrees.1 This characteristic is essential for these prey animals, as it helps them spot potential predators quickly.

At the back of their eyes, they have the retina, where the photoreceptors (light-sensitive cells) work. There are two types of photoreceptors: rods and cones. Put simply, rods are responsible for night vision and cones for color vision. Hamsters’ retinas have approximately 97% rods and 3% cones, which explains their nocturnal habits.

fluffy Syrian hamster in the hands of a vet
Image Credit: TShaKopy, Shutterstock

Hamster Vision Range

When it comes to a hamster’s visual field, it extends approximately 270 degrees, which compared to the 180 degrees humans have, it is quite impressive. On the other hand, hamsters’ visual acuity is quite poor. It is estimated that they can see approximately with a visual acuity of 20/2000. The visual acuity of normal humans is 20/20. The translation to this is that a hamster must be approximately 100 times closer to an object to see it as sharply as we do.

Color Perception

The world from a hamster’s perspective is not as color rich as ours. Studies suggest that while hamsters can perceive some colors, their color perception is far less vivid and rich compared to humans. Their color vision is believed to be in the blue and green spectrums. This limited color perception is due to the types of cone photoreceptors in their eyes. Nonetheless, it’s a fascinating glimpse into how these adorable creatures see the world around them.

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The Importance of Other Senses

miniature jungar hamsters sitting on a woman's hands
Image Credit: Bilanol, Shutterstock

While vision plays a key role in a hamster’s interaction with their environment, other senses are equally critical for their survival and everyday activities. We’re now shifting our focus from their eyesight to other sensory systems – their acute hearing and remarkable sense of smell, paramount for communication, finding food, and sensing danger.

Smell

The sense of smell is not just important, but vital for hamsters. It’s their primary way of understanding and interacting with the world. Hamsters use their advanced olfactory abilities to distinguish between a variety of scents. This allows them to identify food sources, even in complex environments. It’s also a crucial tool in social interactions, helping them recognize potential mates or detect the presence of rivals. Moreover, hamsters use scent-marking to establish their territory, leaving behind a unique aroma that communicates ownership to other hamsters. Their sense of smell also alerts them to potential dangers, such as the presence of predators, ensuring they remain safe in their habitat.

Hearing

Hamsters are gifted with a great sense of hearing. This auditory sensitivity allows them to perceive high-frequency sounds that are completely beyond the human hearing range. Such a heightened hearing ability serves as a critical survival mechanism, alerting them to possible threats that may be lurking nearby. The slightest rustle or squeak can send a hamster scurrying for cover. This auditory acuity also enables them to communicate with each other using ultrasonic vocalizations that are imperceptible to us humans.

Dwarf Winter White Hamster inside the cage
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Touch

Touch, particularly through their whiskers, plays a significant role in how hamsters explore and navigate their surroundings. These whiskers, also known as vibrissae, are packed with nerve endings, making them highly sensitive to changes in their environment. As hamsters are primarily nocturnal and have limited vision, they rely heavily on these whiskers to maneuver around. The whiskers provide tactile feedback, helping hamsters detect and avoid obstacles, locate entrances to burrows, and even find their food. These tactile appendages essentially act as a hamster’s ‘hands’, giving them a sense of touch that guides them through their daily activities.

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Caring for Your Hamster’s Eyes

While understanding a hamster’s senses is necessary for their well-being, it is also vital to pay attention to their eyes and their care. Hamsters’ eyes are crucial for their interaction with the world. This section will provide essential tips and guidelines on how to maintain your hamster’s eye health, ensuring they live a comfortable and healthy life.

white hamster on a person's hands
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Regular Check-ups

Ensuring the health of your hamster’s eyes starts with regular check-ups. These don’t necessarily require a trip to the vet each time; instead, they can be done at home during your routine interaction with your tiny companion. Observe your hamster’s eyes closely for any changes in appearance or behavior. Signs of redness could indicate irritation or inflammation. Cloudiness in the eyes might be a sign of cataracts, a condition more common in older hamsters. Discharge from the eyes is often a sign of an infection or possible injury. In any of these cases, it’s crucial to consult with a vet promptly to ensure your pet gets the necessary care and treatment.

Clean Environment

A clean environment is vital to prevent eye infections and other health issues in hamsters. Their living area, particularly their cage, should be cleaned thoroughly on a regular basis. This includes removing old food, washing the cage with a pet-safe cleaner, and replacing the bedding. Bedding should be soft and dust-free to avoid irritating your hamster’s eyes. It’s also crucial to keep the cage in a well-ventilated area to prevent the buildup of ammonia from urine, which can also cause eye irritation. By maintaining cleanliness, you reduce the risk of bacteria growth and potential infections, contributing to the overall well-being of your hamster.

hamster in the cage
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Balanced Diet

Feeding your hamster a balanced diet is another key aspect of maintaining their eye health. Hamsters must be fed a commercial formulated diet recommended by your vet. Diets based on seeds are not nutritionally complete and can cause health problems. Occasional treats should be high in protein and low in fat.

If you are considering giving your hamster any new foods, always introduce them gradually to avoid upsetting your hamster’s digestive system, and most importantly, make sure your vet gives you the green light for whichever dietary addition you are planning to make.

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Conclusion

Life from a hamster’s perspective is quite different from ours. While they may not have the sharpest eyesight, they make up for it with their other senses. As pet owners, understanding these differences allows us to better care for our little friends and appreciate the unique ways they interact with the world.


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Why Do Hamsters Die So Easily? 12 Vet Reviewed Reasons

Hamsters are fun little animals to live with. Their antics are extremely entertaining to watch, and creating the perfect habitat for them can be part of the enjoyment. They don’t require a daily walk like a dog, and are less demanding of your attention than a cat, but they do still involve a significant amount of responsibility.

Even when you’re seemingly doing everything right, these tiny pets do seem to die more easily than the more robust cat or dog, whether from stress, health problems, or old age. Finding your hamster dead is a sad and stressful experience. Understanding the possible reasons for sudden deaths is important, as it can help you understand if there was anything that could have been improved or done differently, or if it was just bad luck.

We’re going to take a look at 12 reasons why a hamster might die easily, and what you might be able to do about it. But before we do, let’s talk about one very important thing to be aware of when it comes to hamsters:

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Is My Hamster Dead or Just Hibernating?

In cold conditions, your hamster may go into hibernation, and you wouldn’t be the first person to confuse a hibernating hamster with a dead one! When hibernating, their bodies feel quite cold and their breathing and heart rate slow down significantly.

So if the temperature has dropped and your hamster has too, monitor them closely for breathing and a heartbeat, and if in doubt, call in an expert; your vet will be able to tell for certain.

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The 12 Reasons Why Some Hamsters Die Easily

If your hamster has indeed passed away, and there is no obvious cause of death, you might find an answer here amongst these 12 reasons why hamsters may seem to die easily.

1. Stress

While stress may not be a disease or illness, it can put a big strain on your hamster’s body and result in a weakened immune system. Just like for humans, the immune system is essential when it comes to fighting off illness and disease. When it’s weakened, it is harder for hamsters to fight off any exposure to toxins and/or disease. This can mean the development of an illness or disease that hits hard and fast and can result in a sudden death. Your hamster could show no signs of illness until it’s too late.

Some of the most common causes of stress for a hamster include
  • Noisy households

  • Close proximity to predator species (eg. cats, dogs)

  • Inappropriate size or location of habitat

  • Rough handling

Your hamster buddy should have a cage that is at least 100cm x 50cm (40” x 20”). They might be tiny, but a hamster in the wild might travel up to 5 miles in a single night in the hunt for food! You should also provide them with enrichment such as tunnels and exercise wheels. Their cage should be kept away from high traffic areas, drafts, and from the prying eyes of curious cats and dogs.

Although hamsters can be a wonderful first pet for children, it is important that they learn to handle their pets very gently, and only do so with adult supervision. It is far too easy for a squirmy hamster to be squeezed too hard or dropped.

hamster in a cage
Image Credit: Vinokurov Alexandr, Shutterstock

2. Heart Problems

Some hamsters can quickly succumb to heart problems, resulting in what seems to be a sudden death, even if a problem has been brewing for a while.

Here are the serious heart problems that hamsters can develop that owners should be aware of:
  • Congestive Heart Failure — This is when the heart muscle weakens until it cannot support the cardiovascular system of the hamster, which results in death. This problem is most commonly seen in older hamsters, but it can develop in hamsters of any age. There are a few signs that might be displayed in the days or hours before death, but they can be hard to detect if not intentionally looked for, and they might not surface at all. These signs include an irregular heartbeat, a blue tint to the skin and/or gums, and a rapid breathing rate.

  • Atrial Thrombosis — This is when blood clots, sometimes referred to as blockages, form in one or more of the upper chambers of a hamster’s heart, typically on the left side. This problem is most common in older hamsters.

  • Polymyopathy — This hereditary disease tends to progress into heart disease and eventually, failure. It’s caused by a recessive gene, and can also affect the entire musculoskeletal system. It isn’t obvious when a hamster is suffering from this hereditary disease, which can make it seem like a hamster easily or hastily succumbs to death. This disease is common among Syrian Hamsters.

Stress can certainly make these problems worse, but won’t actually cause heart disease. However, if your hamster has a weakened heart, a sudden shock could be enough to send them over the edge.


3. Wet Tail

This term is just a technical way of referring to watery diarrhea, which could be caused by one or many reasons. It’s believed that this condition is most commonly caused by a variety of intestinal bacterial infections, such as Campylobacter or Salmonella. A poor diet, stress, poor hygiene, and habitat overcrowding are thought to contribute to wet tail. Sadly, it most commonly affects younger hamsters, so you could bring one home from the pet store that is already infected with it.

If your hamster has diarrhea that lasts longer than 48 hours, or you notice an unpleasant odor coming from their back end, you need to take them to see a veterinarian.

fluffy Syrian hamster in the hands of a vet
Image Credit: TShaKopy, Shutterstock

4. Pneumonia

Hamsters are susceptible to pneumonia, especially if their habitats are damp and humid. If a hamster’s habitat is not tended to, their urine, feces, and spilled water can cause harmful bacteria to grow in a habitat, and those bacteria can be carried into the air as humidity increases. Pneumonia in hamsters may cause signs that are easily overlooked or serious signs, such as a fever, depression, mucus discharge, excessive sneezing and/or coughing, and distressed respiratory function.

Regular cleaning of your hamster’s environment is essential to their health and wellbeing. You should remove any damp or soiled material daily, and perform a thorough clean, including a full change of bedding material, weekly.


5. Kidney Disease

Most common in older female hamsters, kidney disease often develops rapidly and results in weight loss, excessive urine production, and increased thirst. Unfortunately, these signs can be overlooked if their water consumption and urine production are not closely monitored.

Keeping a close eye on your hamster’s weight can help you detect various problems. If your hamsters seem to gain or lose weight in a short amount of time, it’s a good idea to schedule a checkup with your local veterinarian. Invest in some good kitchen scales and make a habit out of weighing your hamster regularly, perhaps when doing their weekly cleanout.

Vet holding a hamster
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6. Diabetes

You might be surprised to learn that hamsters can get diabetes. This problem develops when the body cannot produce enough insulin, and this prevents the glucose from their food from being absorbed by their cells. Diabetes does not produce many obvious signs aside from increased thirst and excessive urination, and these can be attributed to other problems, like kidney disease. Therefore, it’s important to have a veterinarian diagnose your hamster’s health issues at the first sign of a problem.

Unfortunately, injecting hamsters with insulin is not a practical solution for such tiny creatures, but the condition can sometimes be managed through diet manipulation.


7. Infections

A variety of different infections can take hold of a hamster and threaten their life. For example, hamster polyomavirus is known to result in lymphoma, especially in younger Syrian hamsters. Older hamsters and other types of hamsters, however, are not immune to the problem. Lymphocytic choriomeningitis virus is not a very common infection of hamsters, but it can be fatal. It is a zoonotic disease, which means that humans can also become infected. Fortunately, human infection is very rare, but women who are pregnant, or trying to conceive, should take extra precautions when handling hamsters.

Bacterial and fungal infections are also possible, and are a particular risk in dirty, soiled bedding material. The tiny size of a hamster means that an infection can progress rapidly, which could lead to death in a short amount of time.

A white dwarf hamster asleep in a nest of paper and straw bedding
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8. Amyloidosis

This genetic condition results in the production of a dense protein called amyloid. It builds up in organs like the kidneys, liver, and even the heart, with these amyloid deposits eventually interfering with organ function. Amyloidosis is most common in female hamsters over 1 year old, and will normally result in acute kidney failure and death. Unfortunately, there is no treatment for this condition.


9. Intussusception

Intussusception occurs when part of the intestine ‘telescopes’ inside itself, resulting in a painful, often fatal, obstruction of the intestine and its blood flow. The most common cause of this condition in hamsters is constipation, but it can also occur with severe or chronic diarrhea; another reason to pay close attention to your hamster’s toileting habits.

vet wearing in gloves examining hamster
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10. Cancer

Cancer can develop in any part of the body, including the organs, the brain, and even the circulatory system. It can be extremely hard to detect the development of cancer in hamsters, so if they succumb to the disease, it could seem sudden.


11. Old Age

Pet hamsters generally only live up to about 3 years, so their death can seem premature and sudden to children and those unfamiliar with the lifespan and needs of these rodents. Once your hamster reaches about 2 years of age, it’s time to think of them as seniors and treat them as such—with grace, softness, and great care—until the end of their life. You may notice that your hamster slows down a little at this point, but no serious signs are obvious when it comes to pinpointing the old age and end of life of a hamster.

If you notice that your aging hamster is having a bit more difficulty getting around, be sure to make adjustments to their enclosure to make things easier for them, and talk to your vet about pain relief – even hamsters get arthritis.

Hamster is sleeping on wood shavings
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12. Unknown Issues

Sometimes, animals die without any explanation. They might not wake up from a nap, or they may get into an accident in their enclosure. You might have clues to work with so you can figure out the cause of your hamster’s death, or you may sadly find your hamster lifeless without ever figuring out why. Several of the problems we mentioned above may only be properly diagnosed with a postmortem examination, which, understandably, are not performed all that often.divider-hamster

A Final Recap

There are several reasons that a hamster might die easily or suddenly. With proper care and a close eye, we can reduce the risks to our tiny pets, but we cannot stop all deaths from occurring. You might even bring a hamster home from the pet store that is already ill and will die no matter what you do. If you have any questions or concerns about caring for your hamster, don’t hesitate to contact a veterinarian for guidance and advice.

And remember, if you find your hamster lifeless, and cold weather is setting in, check closely; they may just be hibernating.


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The post Why Do Hamsters Die So Easily? 12 Vet Reviewed Reasons appeared first on Pet Keen.

Do Hamsters Fart? Do They Smell Bad? Vet-Verified Facts

Pocket pets seem to be increasing in popularity, and more people are welcoming hamsters into their homes. These cute and fluffy rodents are fun and easy to care for, making them the perfect companion for anyone looking for a low-maintenance pet.

Pet owners always want to know everything they can about their pets, and when the questions about what they eat and where to keep them have been answered, you might move onto other queries, like: Do hamsters fart? If so, do their farts smell bad?

The answer is: Yes, hamsters do fart, but no, they’re not very smelly.

Keep on reading to learn more about hamster digestion, including their production of gas.

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What Does a Hamster’s Digestive System Look Like?

When a hamster eats a specific food, it enters their oral cavity, where it’s crushed by the hamster’s teeth, specifically the incisors and molars.

Their stomach is divided into two separate areas:
  • Glandular stomach — This part of a hamster’s stomach is in charge of storing food for a short period and keeping the food moist.

  • Non-glandular stomach — The pH value in this part of the hamster’s stomach is higher than in the rest, enabling fermentation and helping the animal digest food more easily.

This stomach organization is a feature shared by all rodents and horses, as well as the inability to vomit or burp.1

The food then travels to the hamster’s small intestine, which is the main organ in charge of digesting food and breaking it down before it passes through the cecum (known as the appendix in humans) and into the large intestine. Their digestive system ends with the rectum and the anus, which is where waste and gas are expelled.

Can Hamsters Fart? Why and How Do They Do It?

Some hamster owners swear blind that they have heard their pet pass gas, whereas others claim that their hamster never has. The reality is that a hamster fart is such a small event that most owners would never notice it occurring.

Like with all mammals, the digestive process of the hamster involves the fermentation and breakdown of food matter, a process which produces gas. And in the case of hamsters that cannot burp, this gas cannot go up, so it must go down.

We all know that some foods create more gas than others, and the same applies to hamsters. When it comes to humans and our more sizable pets, this effect is often quite obvious. When we’re dealing with a tiny pet with an even tinier digestive system, even a significant amount of gas for a hamster is going to be minuscule to us.

Farting is a perfectly natural and normal biological process, but there are some things that can lead to an increase in this gas production that we should be aware of. As we mentioned, certain foods can increase the amount of gas produced during digestion, such as beans, legumes, seeds and cruciferous vegetables (eg. broccoli, cabbage, cauliflower).

Eating too quickly or swallowing air can also lead to the accumulation of gas in the digestive tract. This might just be the result of a particularly hungry hamster, but sometimes it can occur if your pet has a problem with their mouth or teeth.

gray hamster home among the colored food pellets
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Do Hamster Farts Smell Bad? Are They Loud?

Hamster farts are typically non-smelly and quiet, if not entirely silent. Hamsters are small animals whose digestive tracts are also small, so even a large fart to them will be barely noticeable to us.

The types of food that hamsters should be eating are fairly low in fiber, and will not ordinarily produce enough gas for their farts to be particularly loud or smelly, so it would be unusual for their farts to be all that obvious.

Excessive farting could be a sign of a gastrointestinal problem in hamsters, which is why it’s important to have your little friend checked by a vet if you notice them expelling too much gas.

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Final Thoughts

Hamsters fart, but it is on such a small scale that it’s almost undetectable. Their farts are also usually silent and non-smelly, which is why it may seem as if these little rodents don’t fart at all.

If it seems like your hamster is farting too much or too often, speak with your vet to rule out possible gastrointestinal or dietary problems.


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