Most states have specific laws governing the possession of dangerous wild animals, and the liability of landowners for injuries caused by wild animals on their property. Ferae naturae is a common law doctrine (created by judges in court opinions) meaning "animals of a wild nature or disposition," and traces its origins back to the Roman empire. Under the doctrine of ferae naturae, wild animals are presumed to be owned by no one specifically, but by the people generally.

In many states the rule of law has developed that a landowner cannot be held liable for the acts of indigenous wild animals occurring on his or her property unless the landowner has actually reduced the wild animals to possession or control, or introduced a non-indigenous animal into the area.

In Idaho, the possession of dangerous wild animals is regulated by the Idaho Code and administrative rules. The state requires permits for the possession of certain exotic animals, which are considered potentially dangerous to humans, property, or wildlife. Idaho Code § 25-3501 et seq. outlines the provisions for possessing 'deleterious exotic animals,' which include certain species of bears, big cats, primates, and other specified animals. Individuals must obtain a permit from the Idaho Department of Agriculture before possessing such animals. Regarding liability for injuries caused by wild animals on a landowner's property, Idaho follows the common law doctrine of ferae naturae. Under this doctrine, a landowner is generally not liable for injuries caused by wild animals native to the region unless the landowner has taken possession or control of the animal or introduced a non-native species that causes harm. However, if a landowner's actions, such as maintaining artificial conditions that attract wild animals, lead to an injury, the landowner may be held liable under certain circumstances. It is advisable for anyone dealing with issues related to wild animals in Idaho to consult with an attorney to understand the specific legal implications.