When Yuzuro the cat comes trotting through the trees tonight, Sirius sat up, wagged his tail in greeting and immediately began wolfing down the ham he bought.
Midway, he noticed that on Yuzuro's name tag, a small piece of paper was stuck to it and it read:
'Dear Sirius,
Please do not come barging into the Gryffindor dorms tonight.
-Mayumi'