Do you ever have problems (aggression etc.) between different species that are living in the same enclosure?
Many of our cohabitated species would have occurred together in the wild anyways, and most of them have been together for a long time now, so at this point problems are fairly rare. Whenever we want to introduce species to each other we gradually introduce them together in controlled settings to see whether they’re compatible. It took a while to get our Doedicurus used to the other animals that they now share an exhibit with, and we still move them to another paddock during the breeding season just to be safe.
There are problems occasionally, though. For example, ever since they started nesting the Incisivosaurus pair have become noticeably more aggressive towards everything else in the Jehol Aviary. At this point a “rivalry” seems to be forming between them and the Chaoyangopterus trio, who don’t seem to get that they should stay away from the nest.
In my experience, the exhibit with the most unrest overall is Pterosaur Tides, mostly due to Sternberg, the big male Pteranodon. He’s highly territorial towards everyone that isn’t a female Pteranodon - and this includes the Anhanguera they share the exhibit with. The Anhanguera generally keep their distance from him, though, and we feed them separately to prevent food scuffles.
There is an… interesting… interaction that recently happened between two animals in a soon-to-open exhibit, but I’m not at discretion to tell yet.