Pet Rodent Guinea Pig vs Hamster

Difference Between Guinea Pig and Hamster

There are many species in the animal kingdom that appear to be identical replicas of one another. This is true for both the guinea pig and the hamster. They appear to be the same at first glance, but additional investigation will substantially aid in detecting their numerous distinctions. But first, let us get to know each other.

Guinea Pig

Guinea Pig

The guinea pig, scientifically known as Cavia porcellus, is a domesticated mammal that is most closely related to cavies, or South American rodents of the Caviidae family. Guinea pigs have chubby bodies and incredibly small legs; they are also rodents without a tail. In general, they are six to ten inches long and weigh one to two pounds.



The hamster, Cricetus cricetus, belongs to the Cricetidae family and is a short-tailed rodent found in Europe and Asia. Most people are familiar with the golden hamster since it appears to be a really appealing pet. Cereals are their major source of nutrition, along with fruits, roots, and leaves, which they transport back to their nests in enormous cheek pouches. One of their characteristics is also being nocturnal.


Despite their fat look, guinea pigs have an edge in terms of size over hamsters. Guinea pigs typically range in length from 8 to 12 inches, whereas hamsters typically range in length from 5 to 6 inches. One of the primary reasons guinea pigs are more expensive than hamsters is that their large bodies require more room.



Hamsters have less life expectancy which is only approximately 2 to 3 years. However, the usual number of pups born by female hamsters is 6 to 12, although they might produce up to 20 at times. They breastfeed them for around three weeks after they are born.

Guinea pigs live for roughly 5 to 7 years, which is significantly longer than the life span of hamsters. They give birth to an average of 2 to 4 piglets, however they can produce up to eight young and completely formed young ones at times.


Guinea pigs have greater interactions with their peers and even with other species. They normally require frequent contact with people. They are more lively and good-natured in groups, making them easier to tolerate. These rodents are very noisy due to their shrieks, screams, and other squeaky sounds.

Hamsters, on the other hand, may be highly aggressive with others, especially when it comes to food. They can be noisy, particularly at night, because they are nocturnal rodents, although their sound is not as loud as that of guinea pigs.



The guinea pig and hamster are both members of the Rodentia order. They are both rodents of the same order but separate families. Both rodents have piercingly sharp masticating teeth that are constantly growing.

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