bestial

bestial [ BES-chuh'l ]
[ adjective ]

MEANING :
1. beastly or pertaining to or in the form of a beast
2. inhuman behaviour
3. debased or marked by depravity

USAGE EXAMPLE 1 :
The legend is about a person who assumed a bestial form on the night of the full moon.
USAGE EXAMPLE 2 :
Fr Murray, a well-known civil rights campaigner, said the treatment of prisoners in the H Blocks was "squalid, cowardly and bestial".