ALWAYS carry a shotgun. If you get grabbed the two shots from a shotgun can quickly weaken the thyla or even kill it. At the least it'll give you a fighting chance of surviving. either pike it to death or let your mounts to finish it off
If you’re near any thick trees, and can’t afford to lose your tame or inventory, just fly high above them. They’re really annoying when you’re not expecting them, but if you’re looking you can see them in the trees. You can always land your mount, shoot it with a crossbow, then kill with mount or narc it.
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
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 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.
If you wanna find them easily just tame a parasaur and use an arge to carry it into the red woods. Have the parasaur on turret mode so it can tell you where the thyla is. It may take a while but I see this as the safest way to find them. You just have to move slowly through.