What most known animal is endangered?

It's difficult to say definitively which animal is the "most known" endangered species, as fame can be subjective. However, some of the most well-known and critically endangered animals include:

* The Amur Leopard: This beautiful cat is the rarest feline in the world, with only a few hundred individuals remaining in the wild.

* The Mountain Gorilla: This iconic ape is known from the work of Dian Fossey and is a symbol of conservation efforts.

* The Javan Rhino: With only a few dozen individuals left in the wild, the Javan rhino is critically endangered due to habitat loss and poaching.

* The Sumatran Orangutan: This intelligent and critically endangered ape is threatened by habitat loss and the illegal pet trade.

* The Black Rhino: Once abundant in Africa, the black rhino is now critically endangered due to poaching for its horn.

While these are some of the most well-known endangered animals, there are many other species facing extinction. Each deserves our attention and support.