Many strange animals are kept as pets. Some have become domesticated over thousands of years, while others are taken from the wild.
Domestic Animals
Wild Animals
How much cruelty is involved depends on two factors, how the animals are fed and housed, and how intelligent they are. It is difficult to imagine ways in which a pet insect might suffer – we do not credit them with much intelligence, and assume they have no self-awareness. Intelligent animals (such as the Chimpanzees and Killer Whales) are certainly aware of themselves and can suffer pain and feel emotions. Keeping any of the Great Apes or Whales in captivity can easily become cruel – they need to be with other members of their own species and to have enough space to behave naturally’.
In my own opinion intelligent wild animals should only be removed from their natural environment if there are very good reasons.