A exotic pet is a rare or unusual animal which is kept as a pet. It is kept in human households but is relatively unusual or usually thought of as a wild animal rather than as a pet.
"Exotic" often refers to a species which is not native (indigenous) to where the owner lives, or an animal that isn't typically kept as a pet (unlike cats or dogs). "Pet" is a companion animal living with people.
A wide variety of animals have been kept as pets. Below is a list of some animals that are kept in captivity at home and are thought to be "exotic". Where examples are provided within a category, the examples are the animals that are relatively commonly kept as pets in captivity at home within that category (although mice and parakeets may not really be considered very "exotic").
↑"A framework for assessing the suitability of different species as companion animals, Appendix CArchived 2013-07-24 at the Wayback Machine"; Animal Welfare 2000, 9:359-372, p. 360pet animal, as defined by the European Convention for the Protection of Pet Animals (Council of Europe 1987) as: animals sharing man's companionship and in particular living in his household.