Dead pets who left their mark

Socks (1980-1996)
Socks liked birds. Small birds, slow birds... dead birds. 
Socks liked the food offered to him by the humans that lived at #4. More than the food at #10. And definitely more than the food made available to him by the humans at #18.
Sometimes he let these humans touch him, fleetingly, after they had deposited their food offerings at his paws. 
But most of the time he just chased birds 
Small birds. Slow birds. Dead birds.
That's when he wasn't sleeping. In his house, at #13. He even provided refuge to a family of humans in his modest above.
He was a selfless old tomcat, Socks.