The Pitter Patter of Tiny Paws

Sirius finds a spell. It looks interesting, so that night, when his dorm mates and boyfriend are asleep, he casts a silencing charm and says the spell. He can safely say that this was not what he was expecting to see. And he definitely didn't expect it to be about his boyfriend, Remus. But since Remus won't tell Sirius about this himself, will Sirius watch it all? *HAPPY ENDING*