Top 10 Rarest Animals In The World

7) Cross River Gorilla: While all Gorilla and species are vulnerable, the Cross River Gorilla is unfortunately the most endangered great ape in the world. Unfortunately, the Cross River Gorilla, which was first noted in 1907, was largely ignored until it was too late (in 1987) and its population numbers were already low. Today, it is estimated that there are less than 250 Cross River Gorillas in the wild and only one known to be in captivity. The biggest threat to the survival of the Cross River Gorilla is habitat loss due to human activities. Also, the Cross River Gorilla is threatened by bushmeat hunting by locals. Due to the hunting, Cross River Gorillas are very fearful of humans and are very rarely observed.