Edinburgh Zoo Map 1977

Any idea what was in the carnivore rock dens at this point?

I don't have a guide for 1977 unfortunately but I do have one from the 50's/60's which has the following species as a rough guide to species around those decades.

Big Cat Dens:

Spotted Hyena
Coyote or Prarie Wolf
Caracal Lynx
Painted Hunting Dog

Lions Rock and Lion House (Now Koala Territory):

African Lion
Leopard
Jaguar
Puma

@Scottish Wildcat I have acquired a guide from 1976.
Species are:

Jaguar
Puma
Leopard
Spotted Hyena
African Civet