Dog

A dog is a member of the species canis lupus. Dogs are often domesticated and kept by people to guard property and serve as companions.

Day 2
The anti-government American terrorist Joseph Wald kept a guard dog in his hideout at 221 Canyon View Road, Simi Valley, California. When Jack Bauer attempted to arrest Wald at about 11:30am, the dog rushed to its master's defense. Jack killed the dog before it could harm him, but the incident bought Wald enough time to flee to his secure panic room.