They’ve got everything at Xavier’s School for Gifted Youngsters
And Old Friends/Freeloaders And Whatever Animals Peter Finds Or Birds That Think Winged Mutants Are Also Birds While In Mating Season!(Charles is looking into a longer sign),

The kittens, Bertha, Madam Duck, 2 domesticated raccoons Peter found orphaned in the woods he had to save, that possum who came around at 3 in the morning to eat sandwiches with Scott and decided to live in the rafters, Warren’s arch nemesis the Cockatoo, all the snakes the Snake mutant dude has, Hank, a really fluffy little dog Kurt thought was a kitten,
half the students believe Alex is a golden retriever (stranger things have happened here) the pig that kid from Kentucky snuck in, a bunch of bunnies Peter saved from rabbit farmers, that huge ass goldfish in the lake that some kid had and tried making special fish food in the lab while Hank was asleep

And I’m like 63% sure I missed some of them.