Shadow if gray or black
Thylacoleo
The Thylacoleo is a large, powerful mount that can climb up trees and pounce on its enemies.

Name ideas for your Thylacoleo from ARK players.
Hellcat
Mr.Heartattack
Nighthawk
Nightcrawler
Hell kitten
ProfessorBleedsALot
Mr/ms. Boing
Average Payday 2 Cloaker
Bloodshed
Nightclaw if black
Everest
Bubbles
Fang
Vanilla Latte ( phlinger phoo)
Garfield
Kitty soft paws
Tree Creeper
Pain-in-my-ass-to-tame-but-worth-it
Tempura or sashimi