User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-6040659-20131209012335/@comment-6050823-20131210000037

Deviljhos tend to try to avoid other large monsters but they have been known to sometimes hunt other large monsters when they are hungry enough(Or possibly when they have a chance to) and, sometimes they may make a mistake and wander into their turf, causing some monsters to fight them off.

Another thing is that the Savage Deviljho, despite being old, has a major hunger problem and its predatory instincts have pretty much gone wild.

An intereseting thing about Deviljho's hide is that its described to be slimy and to be covered in a strange slime.