Look, you really have got me playing ARK again with your dinosaur challenges.
I explored a bit and was lucky enough to find a lone Gallimimus that was bouncing around between some trees so I thought taming that would be a good challenge to get back into the habit.
Picked all the necessary berries, sneaked up behing it and started the mad punching to knock it out.
*punch-punch-punch-punch*
Then it got itself trapped by some more trees as I'd planned.
*punch-punch-punch some more*
Then it managed to wriggle free and in a complete panic ran straight at full speed into a rock and killed itself.
Oh, well. It's not like I had a saddle anyway.
So I went back to my little hut and in the distance saw a big cat skulking around on the horizon. Not a hairy, big toothed one but still big like that, pity that I didn't have my scope at this location to spy a little closer. Maybe I could whip the bolas at it and tame that instead.
But what kind of cat is it?
Had a quick google on my tablet and wondered if it was a Thylacoleo, but that would mean it's strayed a long way from its usual habitat to be here at the coast. And (checks wiki) they need a chain bola to capture them.
But is it really that?
*sneaks a little closer*
And now I see it attacking a big Stego and killing it far too quickly.
Retreat!
EDIT: After a little looky-loo at some YouTube footage it may have been a sabretooth after all (the location would make more sense even if lone ones are rarer) and, being a coward, I obviously just didn't get close enough to see the big teefies.