A few nice endangered species animals images I found:
African Wild Ass
Image by amareta kelly
The African wild ass is one of only seven surviving species of equids (horse family). Of these seven species, five are threatened or endangered. The smallest member of the horse family, the African wild ass stands about 4.5 feet (1.5 meters) tall at the shoulders and weighs about 550 to 600 pounds (250 to 275 kilograms).
Western Lowland Gorilla
Image by rogersmithpix
Western lowland gorillas dwell in the rainforests of equatorial Africa. In 2007, WCS made an amazing discovery of 125,000 western lowland gorillas living in northern Republic of Congo. These new populations, far larger than previously thought, provide new hope for the future of the species. However, western lowland gorillas remain critically endangered and their numbers continue to decline because of poaching, habitat destruction, and disease.
... photographed at Taronga Zoological Park, Sydney, NSW