You need 15 campfires to grow if you don't have a egg incubator, it's a carnivore so it eats meat, like raw meat, raw prime meat, raw fish meat, raw prime fish meat and that's about it

To get an egg on Asa Scorched earth you just need a lymantria because they are easy to tame and saddles are cheap also they are fast. Also you just land next to the nest grab the egg and get the hell out of the trench

Needed to tame a wyvern. Wyvern eggs come in many different forms, they have fire, poison, lightning, ice, blood, and tropical variants.

There's only two eggs which have a 3D Model which is the

Wyvern Egg

Gold Hesperonis Egg

So like get fast and strong hp pteranodon and then find egg grab and get you bootie ata there