Panther

Panthers are creatures found in the Nursery Repository in 2253.

Characteristics
These big black cats probably have a higher Sneak skill than you do. Why they're included in the stocks of animals that Vault 29 had available is anyone's guess.

Appearances
Panthers were to appear in Van Buren, the canceled Fallout 3 by Black Isle Studios. A panther is also featured in the Penny Arcade comic "One Man, and a Crate of Puppets" as an inhabitant of Vault 43.