Found between the snow mountain and volcano, right where the grass meets the snow.

They heal each other when in packs making them harder to kill and allowing them to kill huge thing such as the Rex you just tamed

FUN FACT!

Despite its pig-like appearance, the real-life Daeodon is not a true pig, but a species of extinct monster mammals known as Entelodonts, which are in fact more related to hippos and whales!

Stupid pigs can levitate. How do I know? Well I got ambushed by some that jumped off a cliff onto me, so I grabbed my pteranodon once I respawned and flew over. I couldn’t find them so I dismounted to get my stuff just as the same pigs jumped off the same cliff that they had previously flew off and couldn’t get back up. I got my tapejara and flew back to find them again on top of the unclimbable cliff. I got them that time.