I agree, tasmanian Devils are becoming more and more a common animal, but there are a lot of more species formerly rare , but now belongs to the category"I can't see them anymore".
These are:
Echidna
Tree Kangaroo
Ringtailed-Rock wallaby
Quoll
Common Wombat
Koala
Bear cuscus
Bonobo
Sifaka ( and more of them will follow...Godness, they become the new Hamydyras baboon in europe)
Drill
Okapi
Bongo
Gerenuk
Giant eland
Red River Hog
Visayan warty Pig
Warty Pig
Grevy-Zebra
Red Duiker
Indian Rhino
Malayan tapir
Phillipine Spotted deer
Giant Panda
Red panda
Asian Lion
Red and Roufous Elephant Shrew
Rusty Spotted Cat
Golden Cat
Fishing Cat
Clouded leopard ( the new northern lynx...Godness, why all zoos have to show THEM ?)
Just to name a few.