ADJ.
behind, rough
VERB + ANIMALISTIC
form, scream
ADV.
frighteningly
adj
In the manner of and/or resembling an animal.
In the behaviour of an animal savage; untamed.
Of or pertaining to animalism.
The scream had some animalistic tone behind it.
The oddly assorted creatures, some humanoid in form, some frighteningly animalistic, formed a rough guard about Rocky and Bud.