Gerbil vs. Hamster: How These Two Pocket Pets Actually Differ

Activity Patterns: When Will You Actually See Your Pet?

One of the most practical differences between gerbils and hamsters is when they are awake. Hamsters are nocturnal — they sleep through much of the day and become active after sunset. This means daytime handling can stress a hamster; waking them mid-sleep is a common mistake that can lead to biting or lethargy. For more on this, see common hamster owner missteps.

Gerbils, by contrast, follow a polyphasic pattern — meaning they cycle through short bursts of activity and rest throughout the full 24-hour day. You are likely to see your gerbils digging, running, and exploring at various points during daylight hours, which many owners find more rewarding. Neither animal should be forced awake during its natural rest period.

Social Needs: One Pet or Two?

This is arguably the most important difference between the two species. Gerbils are inherently social animals. In the wild, they live in family groups, and keeping a single gerbil alone can cause chronic stress and boredom. Most animal welfare organizations recommend housing gerbils in same-sex pairs or small same-sex groups. Introducing unfamiliar adult gerbils carries a risk of fighting, so ideally you would adopt a pre-bonded pair from the same litter.

Hamsters, with the exception of some dwarf species, are solitary. The Syrian hamster — the most common pet variety — is territorial and will fight aggressively if housed with another hamster. Even dwarf species sometimes do not tolerate cage-mates. Housing two Syrians together is a welfare problem, not a solution to loneliness. For a broader look at small-pet social myths, our article on small pet loneliness myths covers this topic in depth.

Handling and Temperament

Both gerbils and hamsters can become comfortable with gentle, regular handling — but their baseline temperaments differ. Gerbils are naturally curious and will often approach your hand, but they are also fast and agile, making them harder to hold securely without practice. They rarely bite unprovoked, though startled gerbils can nip.

Hamsters, when properly socialized from a young age, can become quite calm in human hands. Syrian hamsters in particular tend to sit still and explore at a slower pace compared to gerbils. However, a hamster that is handled during the day — while it would naturally be sleeping — is more likely to bite out of disorientation. Patience and a consistent handling schedule matter for both species.

Neither animal is suitable for rough handling or for very young children without close adult supervision. Their small bones make them vulnerable to accidental injury.

Space, Habitat, and Enrichment

Pet store cage sizes are frequently too small for either species. Both gerbils and hamsters need far more room to thrive than a typical starter kit provides. If you are setting up a habitat, our guide on space requirements for small pets explains what animal welfare research actually recommends.

Gerbils need deep substrate — at least 6 inches — for burrowing, which is a core natural behavior. A tank-style enclosure (often called an aquarium or gerbilarium) with a secure mesh top works well. They are prolific diggers and chewers, so enrichment like cardboard tubes and wooden toys helps prevent boredom.

Hamsters also require deep bedding — a minimum of 6–8 inches is widely recommended by welfare organizations — along with a wheel large enough for their body size. A wheel that is too small forces an unnatural curved spine posture and can cause injury over time. Both animals benefit from hiding areas, foraging opportunities, and regular cage cleaning on a consistent schedule.

If you are weighing other small pet options alongside these two, the overview in choosing between guinea pigs, hamsters, gerbils, and rabbits is a useful starting point.