Small pets are generally defined as animals that are small in size and can be kept as pets in a home or apartment. The specific animals that are considered small pets may vary depending on the source and context, but some common examples include:

1. Hamsters

2. Guinea pigs

3. Rabbits (some breeds)

4. Ferrets

5. Rats

6. Mice

7. Gerbils

8. Chinchillas

9. Hedgehogs

10. Birds (such as parakeets and canaries)

11. Reptiles (such as geckos and snakes)

It’s important to note that while these animals are considered small, they still require proper care, attention, and a suitable living environment. It’s important to research the specific needs of any animal before deciding to bring them into your home as a pet.

Some common reasons why people might choose to own a small pet:

1. Companionship: small pets like hamsters, guinea pigs, and rats can make great companions and provide their owners with a sense of comfort and friendship.

2. Low maintenance: small pets generally require less time and effort to care for than larger pets like dogs or cats. They also take up less space in the home.

3. Affordability: Small pets are often more affordable to purchase and care for than larger pets.

4. Easy to transport: small pets can be easy to transport when traveling or moving, and can often be housed in smaller, more portable enclosures.

5. Educational value: small pets can provide a great opportunity for children to learn about responsibility and animal care.

6. Reduce stress: Some research suggests that owning a small pet can help reduce stress and improve overall mental health.

7. Entertainment: Small pets can be entertaining to watch and interact with, especially if they have interesting behaviours or personalities.

8. Provide comfort: small pets like rabbits, chinchillas, and ferrets can provide comfort to their owners through cuddling and affection.

9. Encourage exercise: small pets like rats and mice can encourage their owners to exercise by providing an opportunity for play and interaction.

10. Emotional support: small pets can provide emotional support and help ease feelings of loneliness or anxiety, especially for individuals living alone or in isolation.