For Barcelona Zoo, I'd say;
- Phase out the leopards and jaguar in the favour of small cats (there are chances of lynxes being brought in in the near future, however)
- Small, nocturnal mammals; with a nocturnal house under the Sahel raised pathway being under development, some African noctunals, like bushbabies, Gambian rats, Egyptian fruit bats, elephant shrews, etc. Could take up this space.
- Seeing how there are two elderly male spotted hyenas, phase them out in favour of a pair of striped hyenas, more representative of the thematic Sahel area they're pushing.
- With three species of vulture and two of owl, a couple of species of hawk, eagle, falcon or even something like a secretary bird would be a wonderful addition.
- There's a single female ostrich in a tiny pen now; I believe that a new, full herd of ostriches would be a good idea, or emus replacing the red kangaroos if not. Ratites deserve better.
- There are plenty of freshwater waterfowl, and penguins, but not many seabirds in my opinion. So I'd house a younger group of Dalmatian pelicans, along with cormorants, grebes, etc. In the soon vacant dolphin area.
- Since the passings of the adder and the Montpelier snake, there are absolutely no venomous snakes in the zoo. If they could bring at least one, native or otherwise (an African rainforest viper or rattlesnake would be a real treat), it would make the reptile house feel more complete.
- I'd like the Madagascar day geckos and Axolotls to be permanently exhibited, and a return of the panther chameleons to the collection would be nice too.
- The new zoo directive has announced a Marine Biodiversity Center and an Insect House as part of the future permanent collection, and I believe these would be two great assets to the Barcelona Zoo.