I've already filled a small area with a small amount of mine (yes, that's a small amount, i literally have over 160)
If not many people come I'll add more.
If you add random pets they'll all be removed and you'll be both foed and made unallowed to add more.
EDIT: I've decided all rats should face left. Please turn your rats around so I don't have to.
EDIT: I've decided that the island is looking a little plain! All rat-related items can be put on the island.