The eggs can hatch and you can claim them in the wild. Like this so people know.

Use a bola to bola your tribe mate then you will be fine

I was sitting on a flyer on a cliff above the deinos, thought I was safe to wait for my moment to steal their eggs...had the biggest heart attack when one of them decided to climb up the cliff. I accidentally dismounted in shock and fell right into the packs claws, where they shredded me to death. Don't be scared of them, they smell it.

So I was ready to get one of these guys so I get my stuff and snatched some eggs as I leave I hear that intense battle music I get on my Rex thinking nothing of it I get lost I can’t believe it and what do you know my Rex is losing health quickly I look behind it and LOOKS LIKE THE WHOLE FAMILY DECIDED TO GIVE US A HUG GOODBYE about 4 of em where there my Rex died :( I did too I lost all my precious belongings please return my stuff family of Deinonychus.....

These guys are idiots. Many of them spawn on clifftops. Just bring in a flyer (Argies or Pteranadons will do just fine) and take a swipe at them. They will all zero in on you instantly. Kite them right off a cliff. Do a smug slow-walk as you claim the eggs in complete safety.