@The ElvenqueenThat's a neat idea, Permits. I think as far as dragons go they'd be illegal considering how hard they'd be to hide. Other magical things like threstals and blast ended shrewts would probably be things that wizards would need a license for.
I think there will probably some of those sort of creatures in the lake (like grindlyows) but no mermaids!
New cannon stuff for this rp
-I'm keeping mermaids and goblins in Europe, America has dwarves witch are in the same sort of boat as goblins and function in a similar way
-North america has more house elves than Europe, though European house elves often find the American house elf ways disgusting and improper(that is if they knew about America).
-The ceiling of the dining hall has painted angels and what not and they do move and stuff
-wizards need permits to keep dangerous and exotic pets, this could be a job choice for your character if you wanna be more indepth