Cats and dogs, the most popular pets in the U.S., are carnivores, but most of the other popular mammal pets are rabbits or rodents (e.g., mice, rats, hamsters, guinea pigs). Domestic ferrets are carnivores, also. North American exotic pet breeders and promoters offer a long list of "hand-raised" wild carnivores as pets. Examples include wild cats (such as serval, caracal, Siberian lynx, Canadian lynx, bobcat, fishing cat, cougar), wild members of the dog family (fennec fox, bat-eared fox, black-backed jackal, raccoon dog), viverrids (civets and genets), mustelids (zorilla and otters) and raccoons and their relatives (coatimundi and kinkajou). All of these are restricted species in California and are not legal to possess as pets. The European polecat, which is the same species as the ferret, is also illegal to import or possess as a pet in California. The polecat, which "can become extremely tame" (Wellstead, 1981, pp. 14-15), is not usually a good candidate for pet keeping, but it is used by breeders to cross with ferrets to develop hybrids with certain traits.
Breeders offer an assortment of hybrid exotic cats, such as the "bengal", resulting from crossing domestic cats with wild cat species. Such hybrids, or purported domestic cat-wild cat hybrids, are not restricted in California and are treated as domestic cats.