6 rarest animals found on Earth

Irrawaddy Dolphin: This is a rare dolphin specie found in coastal water in Southeast Asia.

Pygmy three toed sloth: This is a rare and considered he smallest specie of sloth, reportedly is endangered.

Aye Aye: World's largest nocturnal primate, are endangered. Native to Madagascar, they have long middle fingers.

Tardigrade: These "water bears" are super flexible and can survive extreme climate.

Kakapo: This flightless bird has distinctive coloured feather and is critically endangered.

Vaquita: It is considered world's rarest mammal and is extremally rare sight.