User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-6040659-20131209012335/@comment-6050823-20131209013838

They are closely related to Aptonoths and to Apceros.

They are highly territorial herbivores.

They have good hearing but bad eyesight.

Rhenoplos will attack any inturders/enemies relentlessly.

They lose their sight and sense of mind, when they crash into a tree or a rock.

Rhenoplos protect their eggs with their lives.

Lastly, they don't seem to like other herbivores.