Sorry, this video asset has been removed.

They are one of the rarest of all big cat species but now there are two more amur leopards after the birth of two cubs at the Wildlife Heritage Foundation in Smarden.

Out of just 30 left in the wild it is thought there are only seven females.

One of the Smarden cubs is definitely male, and excited staff and volunteers at the big cat breeding centre think – and hope – the other is female.

The cubs are now eight weeks old and have been named Argun and Anuy after tributaries of the Amur River, which forms part of the border between China and Russia.