Hidden video footage helps scientists learn more about female Amur leopards.
Satellites show giant hole ringed by 20 'baby craters'.
Tigre de Cristal under fire for 'abusing' rare big cat to promote gambling revolution.
Previously unknown subspecies confirmed by DNA tests and probably numbering around 400.
Cornered by local dogs, the animal 'growled' before rescuers saved it.
Cub 'Mur' joins the puppet cast of 'Good Night, Little Ones'.