"What you can see here is that the only piece of the horn on the outer rim that's still alive is where that blood is," Forrest Galante, a wildlife biologist and tracker, explained as a wildlife ...

A male babirusa's canines are an evolutionary mystery: They never stop growing, they're too fragile to hunt or forage with, and, given time, they end up twisting and penetrating the animal's own skull ...

"Growing backwards, so much so that if left untreated, it would eventually puncture the skull and kill the animal." ...