小動物って英語でなんて言うの？

Gnawing animals such as rabbits, rats and hamsters, are known as rodents. Rodents are popular pets in many countries - especially small rodents. "A beaver is a large rodent and may not be kept as a pet!"

"Small animals." This is the most basic way of addressing smaller animals, and includes cats, dogs, rabbits, hamsters, etc... "Small critters." This is another way of calling small animals. Critters refers to creatures that are smaller, especially those that are wild animals, but can also be used to describe domestic animals too.

Pets are animals people keep in their own home rather than being in a zoo or in the wild so you call refer to rabbits or hamsters as 'small animals' or 'small pets' a rodent is a small animal that gnaws/chews things and has a large set of (incisors) front teeth like rats, squirrels, hamsters etc

"Small Animals" and "Small Pets" used to describe animals of the smaller size, "Small Pets" used to describe Animals that you own, Pets is a term described animals that you own ex. Rabbits, mice, etc. ex. "We have many small pets in our family home"

Some small animals can also be referred to as small pets. Examples of the most common small pets: gerbil, hamster, guinea pig

There is no direct translation from Japanese but when you say small animal, people will generally assume you mean rabbits, bunnies, birds, mice... etc. Baby animals: can be used to describe animals that are babies which would include all animals or to describe animals that are small. With the latter it is not scientifically or grammatically correct but it is used by people when they talk about small animals. Hope this helps!