An integral part of the Natural History Museum and with a strong focus on education, the Zoo emphasises its work on the conservation of threatened animal species in particular big cats (Asiatic lions, Siberian tigers), primates (lemurs, marmosets, etc. with more than 25 species) and birds (some thirty aquatic and tropical species). There are also many different species of hoofed animals from around the world (Visayan warty pigs, Visayan spotted deer, etc.) as well as two species of macropods from Australia: red kangaroo and rock wallabies. Around 400 animals from more than 70 species can be viewed in large planted enclosures.