Easily the most useful creature I've ever tamed.
They are absolute beasts at everything. Jacks of all trades. And more.
They run faster than wolves and sabertooths, they have a weight stat that rivals rexes and mammoths, their health can be pushed higher than any wolf or saber as well, and can gather chitin/keratin at ridiculous amounts per kill, their damage rivals wolves and sabers, can knock down trees in 1-2 hits, they have what seems to be a nearly infinite stamina pool once levelled a few times, can climb any vertical surface in the wild and almost all built structures, can pounce from vertical surfaces to disable/damage mid to small-sized creatures, and can jump vertically, nearly 4 walls high making escapes easy; the list goes on.
70+ pelt per rhino. 70+ chitin per scorpion.
Just .. be careful. Be wary when you walk/fly into the redwoods.
Thylacoleo are capable of pinning down flyers in mid-flight (anything but the Quetz and Wyvern, I believe), other Thylacoleo, and even Therizinos. You can also jump from object to object by holding down the jump button while pouncing from a tree or cliff (have to hit it at the right angle, however). Upvote to inform others!