Dwarf Crocodile

The Dwarf Crocodile (Osteolaemus tetraspis) is the smallest of the 'large' crocodile species.

It is considered a vulnerable species.
It has a fairly wide range, being found from sub-Saharan west Africa to west central Africa, and south to Angola.
It is a shy nocturnal crocodile that inhabits slow moving river waters, swamps and savanna water pools.

There are two known subspecies of Dwarf crocodile, they are:
Osteolaemus tetraspis tetraspis, and
Osteolaemus tetramus osborni- the Congo or Osborn's dwarf crocodile
There my also be a third, but that is still under speculation by the scientific community.

Other names that this animal goes by are:
African broad-nosed crocodile
African caiman
African dwarf crocodile
Black crocodile
Bony crocodile
Broad - snouted crocodile
Rough - backed crocodile
West African dwarf crocodile

Zoos they can be seen in are:

Pacific region
Woodland Park Zoo  Seattle, Washington
Sacramento Zoo  Sacramento, California
San Diego Zoo  San Diego, California

Mountain region
Wildlife World  Litchfield Park, Arizona

Central region
Lincoln Park Zoo  Chicago, Illinois

Eastern region