Just incase you were interested BGU, the Pelican (not on a base) isn't Britains, neither is the repainted Giraffe (they did make one though without an articulated neck) or the first monkey.
Some more to look out for
Penguins (another version like you have) and one with no base
Pelican (standing no base)
Sable antelope (2 versions) one has removable horns
Indian Guar
Black Rhino
Indian elephant (removeable tusks)
African Elephant (bull head up)
African Elephant (female trunk down)
2 more chimpanzee babies
Adult Chimpanzee (moveable arms)
Polar bears (there are two more different version than you have)
Tigers (two more different versions also)
Lioness (rounded ears)
Platypus
Nile crocodile (opening mouth)
Baby crocodiles (2 versions)
Moose
Wildebeast
Baby Giraffe (on a base walking)
Another version of the standing Gorilla
Tapir
Red deer
Polar bear baby (also in brown but very rare)
Leopard (available in black rare also)
Lion cub (no base)
The Walrus, Tortoise and Bison also each have another variation
The lion cubs on a base were also painted as baby tigers (I have only ever see one set verrrrry rare)
I think that maybe it \ \ \
Oh yeah and most were also available in lead
Happy Collecting :P:P:P