We've spotted thestrals, a bicorn, an erumpent, two hippogryffs, and I'm pretty sure there are some Centaurs. Oh, and a daraliznof freaazer. There's probably more than one of those.

There were also a couple of werewolves but it's not full moon so no particular danger there.

Maebh's office may have an inventory but it might be behind some ward that bites, I'd rather not search it unless we think we'll find something we need.