10 Surprising Facts About Hamsters You Should Know

fascinating facts about hamsters

Hamsters are undoubtedly adorable, but there is much more to these small, furry creatures than meets the eye. In the vast terrain of the animal kingdom, these gentle creatures are rich with fascinating traits.

From their unique physical characteristics to their intriguing lifestyle and habits, there’s always something new to learn about hamsters. Here are ten surprising facts you may not have known about these cute little critters.

Fact 1: There are more than 20 species of hamsters

While the Syrian hamster is the most commonly known and kept as a pet, there are approximately 20 different species of hamsters. These species vary significantly in size, color, and behavior. For instance, the Roborovski dwarf hamster is one of the smallest species, measuring just two inches long, while the European hamster can grow up to 14 inches.

Notably, each species has adapted to its native habitat, influencing their behavior and physical traits. For example, desert-dwelling hamsters have evolved to conserve water and thrive in arid conditions. Understanding the different species can help pet owners provide better care tailored to their hamster’s needs.

Fact 2: They are nocturnal creatures

Hamsters are nocturnal animals, meaning they are most active during the night. This behavior is rooted in their wild ancestors, who would forage for food under the cover of darkness to avoid predators. For pet owners, this nocturnal nature means you may hear your hamster running on its wheel or exploring its cage late into the night.

Understanding a hamster’s nocturnal habits is crucial for providing the right environment. Ensure their cage is placed in a quiet area where nighttime activity won’t disturb the household. Additionally, providing plenty of toys and an exercise wheel can help keep your hamster entertained during their active hours.

Fact 3: Hamsters are prone to stress

Despite their seemingly carefree demeanor, hamsters are highly sensitive to stress. Changes in their environment, loud noises, or even improper handling can cause significant anxiety. Signs of stress in hamsters include excessive grooming, biting their cage bars, and changes in eating or sleeping habits.

To minimize stress in hamsters, it’s essential to create a stable and calm environment for your hamster. Gradual adjustments and a consistent routine can help them feel secure. When handling your hamster, be gentle and patient, allowing them to get used to your presence before attempting to pick them up.

Providing hiding spots and tunnels in their cage can also give them a sense of security, allowing them to retreat and feel safe. By understanding and mitigating stress factors, you can ensure your hamster lives a happy and healthy life.

Fact 4: Hamsters are banned in Hawaii

Did you know that hamsters are illegal in Hawaii? The state’s unique ecosystem is highly vulnerable to non-native species, and hamsters are considered a potential threat. If released into the wild, hamsters could disrupt local wildlife and agriculture, leading to significant ecological consequences.

Hawaii’s strict regulations aim to protect its delicate environment from invasive species. This ban extends to other common pets, such as ferrets and gerbils. For residents of Hawaii, this means hamsters are off-limits as pets, ensuring the protection of the island’s natural habitats.

Fact 5: Their teeth never stop growing

One of the most fascinating (and slightly scary) facts about hamsters is that their teeth never stop growing. This continuous growth is a trait shared with other rodents and requires hamsters to gnaw regularly to keep their teeth at a manageable length. If left unchecked, overgrown teeth can cause significant health issues, including difficulty eating and infections.

To help your hamster maintain proper dental health, provide plenty of chew toys and wooden blocks. These items not only keep their teeth trimmed but also offer mental stimulation and prevent boredom. Regularly check your hamster’s teeth for any signs of overgrowth or abnormalities.

Fact 6: Hamsters love to hoard food

Hamsters are renowned for their food-hoarding habits, a behavior rooted in their wild ancestry. In the wild, hamsters would gather and store food to ensure they had enough to eat during scarce times. This instinct persists in domestic hamsters, who often stash food in various hiding spots within their cage.

It’s common to find piles of seeds, pellets, and other treats hidden in tunnels, bedding, and even exercise wheels. While this behavior is entirely natural, it’s essential to monitor your hamster’s food hoarding to prevent spoilage and maintain a clean cage.

Regularly check and clean your hamster’s hoards to ensure their food supply remains fresh and uncontaminated. Providing a consistent feeding schedule can also help manage their hoarding tendencies, ensuring they always have access to nutritious food.

Fact 7: They are prone to bacterial and viral infections

Hamsters, like all animals, are susceptible to various bacterial and viral infections. Common ailments include wet tail, respiratory infections, and skin diseases. Symptoms of illness in hamsters can include lethargy, loss of appetite, sneezing, and changes in fur condition.

Maintaining a clean and hygienic living environment is crucial in preventing these health issues. Regularly clean your hamster’s cage, change bedding, and provide fresh food and water. Quarantine new hamsters before introducing them to existing pets to prevent the spread of diseases.

Fact 8: Some hamsters hibernate

Some hamster species have the fascinating ability to enter hibernation, a state of dormancy that helps them survive cold temperatures and food scarcity. In the wild, hibernation allows hamsters to conserve energy and survive harsh conditions. However, this behavior can also occur in domestic hamsters if their environment becomes too cold.

To prevent unintentional hibernation, ensure your hamster’s living space is kept at a stable, warm temperature. Provide plenty of bedding material for insulation and avoid placing their cage near drafts or cold windows.

If your hamster shows signs of hibernation, such as becoming unresponsive or lethargic, gradually warm their environment and consult a veterinarian for guidance. Understanding and managing your hamster’s temperature requirements can help prevent hibernation and ensure their well-being.

Fact 9: Hamsters have poor eyesight

Despite their adorable appearance, hamsters have relatively poor eyesight. They rely heavily on their other senses, such as smell and hearing, to navigate their environment. Hamsters are nearsighted and see best in low-light conditions, which aligns with their nocturnal habits.

To accommodate their limited vision, ensure your hamster’s cage is safe and free from hazards. Avoid rearranging their habitat frequently, as this can cause confusion and stress. Provide plenty of engaging toys and activities to stimulate their other senses and keep them entertained.

Fact 10: European hamsters are critically endangered

While many hamster species thrive as pets, some face significant threats in the wild. The European hamster, also known as the common hamster, is critically endangered due to habitat loss, agricultural practices, and climate change. Conservation efforts are underway to protect and restore their populations, but challenges remain.

Raising awareness about the plight of the European hamster can help support conservation initiatives and encourage responsible pet ownership. By understanding the broader context of hamster species and their conservation status, pet owners can contribute to preserving these fascinating animals for future generations.


Hamsters are captivating pets with a wealth of interesting traits and behaviors. From their nocturnal activities to their food-hoarding habits, these small mammals offer endless entertainment and companionship. By understanding their unique needs and characteristics, pet owners can provide a loving and enriching environment for their hamster companions.