When I took the pterodactyl egg, it was stated flying towards me attacking me, me bravely attacking it with my pet dilophosautus. Lol!

If the lvl 11-12 guy sees this, you can only hatch eggs when they are fertilized, meaning you have to breed 2 pteranodons together but you can only do it when they are both tamed. Wild eggs are only mainly used for kibble and to eat raw.