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Hamster

life science Maturity 7-9 Next article →

Hamsters are small, stout-bodied rodents belonging to the subfamily Cricetinae. This subfamily contains 19 different species organized into seven distinct genera.

Hamster clades
Hamster clades

Because of their manageable size and interesting behaviors, they have become very popular as household pets. They are also used extensively as laboratory animals in scientific research. Understanding hamsters requires looking at their complex evolutionary history and their unique physical adaptations. These small creatures have developed specialized ways to survive in diverse environments across the world.

Physically, hamsters possess several specialized features that assist with survival. They have short, stocky legs and wide, fur-covered feet. Their most notable feature is the presence of elongated cheek pouches. These pouches extend all the way to their shoulders.

Cream-colored long-hair pet Syrian hamster with banana
Cream-colored long-hair pet Syrian hamster with banana

Hamsters use these pouches to carry food items back to their underground burrows. This process is known as food hoarding. When their pouches are completely full, a hamster's head can appear to double or even triple in size. Additionally, hamsters have sharp incisors that grow continuously throughout their entire lives. They must regularly wear these teeth down by chewing.

Hamsters exhibit specific biological rhythms and dietary habits. Most species are crepuscular, meaning they are most active during the twilight hours of dawn and dusk.

In captivity, however, they often adopt a nocturnal lifestyle, waking up around sundown to eat and exercise. As omnivores, they consume a variety of food sources. In the wild, their diet includes seeds, fruits, vegetation, and occasionally burrowing insects. Some hamsters in the Middle East have even been observed hunting insects in packs. They are also hindgut fermenters. This means they sometimes practice coprophagy, which is the eating of their own feces to recover nutrients that were not absorbed in the hind-gut.

There are many different types of hamsters categorized by their genera. The most well-known is the golden or Syrian hamster, scientifically named Mesocricetus auratus.

Syrian Hamster Cage
Syrian Hamster Cage

Other common pet species include the dwarf hamsters. These include the Campbell's dwarf hamster, the winter white dwarf hamster, and the Roborovski hamster. The Chinese hamster is another species often kept by people, though it is less common. The largest species is the European hamster, or Cricetus cricetus, which can reach a length of 30 centimeters. In contrast, the species in the Phodopus genus are the smallest hamsters.

The history of domestic hamsters is quite specific. George Robert Waterhouse first described the Syrian hamster scientifically in 1839. However, successful domestication and breeding did not occur until 1939.

Hamster with babies
Hamster with babies

Interestingly, the entire global population of pet Syrian hamsters descends from a single pair of siblings. These two animals were captured in Aleppo, Syria, in 1930 by a zoologist named Israel Aharoni. He brought them to the University of Jerusalem. The animals bred very successfully there before the colony was eventually exported to the United States.

Hamsters rely on highly developed senses to navigate their world. Their eyesight is quite poor, as they are both nearsighted and colorblind.

Pearl Winter White Russian Dwarf Hamster - Front
Pearl Winter White Russian Dwarf Hamster - Front

To compensate, they are extremely sensitive to movement and sound. They can hear sounds in the ultrasonic range, which are high-pitched noises humans cannot detect. They also use scent glands located on their flanks or abdomens.

Roborofskiohamster
Roborofskiohamster

By rubbing these glands against surfaces, they leave scent trails to mark their territory or identify mates. These sensory tools are vital for survival in the wild.

Socially, most hamsters are strictly solitary animals. This means they prefer to live alone in their own territories. If different hamsters are housed together, it can lead to acute or chronic stress.

Hamster fight
Hamster fight

In some cases, this stress causes them to fight fiercely, which can be fatal. While some dwarf species might tolerate siblings if introduced at a very young age, this is not a guarantee. Understanding these social needs is essential for anyone caring for them. Their behavior is a complex mix of instinctual survival tactics and sensory communication.

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🖼️ Images & Media (12)
File:Hamster Ruso.jpg
Hamster Ruso.jpg
File:Pearl Winter White Russian Dwarf Hamster - Front.jpg
Pearl Winter White Russian Dwarf Hamster...
File:Roborofskiohamster.jpg
Roborofskiohamster.jpg
File:Campbells dwarf.jpg
Campbells dwarf.jpg
File:Hamster clades.svg
Hamster clades.svg
File:Die vergleichende Osteologie (1821) Cricetus cricetus.jpg
Die vergleichende Osteologie (1821)...
File:Cream-colored long-hair pet Syrian hamster with banana.jpg
Cream-colored long-hair pet Syrian...
File:Hamster fight.jpg
Hamster fight.jpg
File:Hamster with babies.jpg
Hamster with babies.jpg
Dwarf hamsters eating cooked, frozen...
File:Hamster standing in exercise wheel.jpg
Hamster standing in exercise wheel.jpg
File:Syrian Hamster Cage.jpg
Syrian Hamster Cage.jpg
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