Definitely a dino worth your time and effort, you can snatch the eggs super early game with a lymantria by luring and cropdusting the parents, and they can be bred for boss battles and PvP.
A few tips:
-No fall damage
-Pounce range and direction is determined by what you're aiming at with your mouse, imagine an invisible crosshair in the middle of your screen. -The pounce goes a lot further than you think, they can latch onto hovering Manticore, as their vertical wall leap (once latched) is 5-6 walls.
-They can still pounce/wall climb when overencumbered, with the same range/mobility, so you can just hop home with all that metal ore you're carrying.
-A fang symbol will appear on pouncable targets, you just have to press Jump once and watch your Deino turn into a raptor sized homing leech missile. For some reason argies are no problem, but YutyS are unpouncable.
-You will need to target Hp, StaM and dmg
Tame them by getting their eggs. Use a whip while you're grappled to a flyer. They need five fireplaces to hatch. It doesn't take that long for them to grow, but to hatch them it's thirty minutes. They can be found easily on the white cliffs along with their eggs. I don't care if you like this or not I just wanna give tips.
I had managed to snatch an egg that had level 140 parents had was excited to hatch my first Deinonychus and took it back to my house and then put down a bunch of standing torches to warm the egg. I went to drop the egg in the middle of the torches and looked and saw the egg had not been dropped. Then I heard a heart dropping munching sound and realized that I had eaten the egg! Moral of the story: make sure you press Left trigger and not Right trigger on console when dropping eggs you plan to hatch!