Answer:

rhinoceros

Answer	Crossword Clue
RHINOCEROS	Mammal with poor vision
RHINOCEROS	Humongous herbivore
RHINOCEROS	One with a thick skin

RHINOCEROS	Ionesco play
RHINOCEROS	Safari sighting
RHINOCEROS	Ionesco comedy.
RHINOCEROS	Zero Mostel vehicle.
RHINOCEROS	Play by Ionesco.
RHINOCEROS	Horned mammal
RHINOCEROS	Heavyweight at a zoo
RHINOCEROS	What's known for its poker face?