I thought your friend Ron might like to keep this owl, as it's my fault
he no longer has a rat.
Ron's eyes widened. The minute owl was still hooting excitedly. "Keep
him?" he said uncertainly. He looked closely at the owl for a moment;
then, to Harry's and Hermione's great surprise, he held him out for
Crookshanks to sniff.
"What do you reckon?" Ron asked the cat. "Definitely an owl?"
Crookshanks purred.
"That's good enough for me," said Ron happily. "He's mine."
Book 3 - The prisoner of Azkaban