Pet cats who are allowed to go outside often become acquainted with their human neighbors as they survey their kingdom, hanging out at various pads and scoring free food and pettings.
These cats usually wear a collar while they're outside, showing the neighbors that the cat they're feeding and petting has an owner nearby, but the collar can also act as a way for neighbors to communicate.
The note said "Please Read", so SliceofToast opened it up and discovered the note wasn't so strange after all, just a pleasant sign of affection for a furry frequent visitor.
She must live in a nice neighborhood, because my neighbors were always trying to either steal my cats or run them over!
-Via Honest to Paws