It has eggs like Wyvern and Rock Drakes. All you need to do is find the eggs. The only thing I know location wise is somewhere in a lava cave there is a tunnel with purple crystal on the walls and ceiling. When you go through that tunnel there is a large room with a lava lake in it. There will be lots of Magmasaurs in the room guarding the eggs. Note that the eggs are on the surface of the lava, so you might want to use a flying Dino and a grappling hook.