Zabu

Zabu is a fictional saber-toothed cat appearing in American comic books published by Marvel Comics. Zabu is connected primarily to the Savage Land, and the X-Men, and most recently the Avengers (by way of the "Pet Avengers"). He is the last known living Smilodon and is a companion and ally of Ka-Zar. An earlier version was known simply as Zar, in the pulp version of Ka-Zar the Savage, featured in the Ka-Zar magazine.