If you fly by the redwoods on the island either fly a bit above the tree tops or a bit away from the edge of the forest. If they aren't on the ground they seem to prefer halfway up redwood tree trunks. I got jumped by 3 so far, the last time was while i was going to tame one. DO NOT get close if you are on a tame, hop off, set a trap and have a bola ready. This things are glorious and fun as hell
They will jump on you and murder you even if you're on a fricking wyvern. You are not safe from them no matter what animal you have. Just accept your slow and tender death. I learned it the hard way lmao. Scared the fckng hell out of me
The redwoods are now basically a no fly zone, I lost a quetz, and a pter to these b******s. They jump out of the tree, rip you off your mount, and then pin you and your mastercraft armor to the ground and murder you.
Wanna find one? Simply mind your own business flying through the redwoods and they'll find you! Just make sure you can take some fall damage and that your tame is set to passive so it doesnt kill the thyla. (I know this seems like a joke but this is legit the only way I know how to find them.)
The Thylacoleo is a relatively strong creature and with its new buff and does 5% damage with the bleed. Good all around creature for traveling and damage but not boss fights. From personal experience I have at thyla with an OP saddle and with utilizing the bleed have taken out several low level Giga’s on official. Depending on how you use it, it might become one of your favorite creatures.