Amazing site, my mom and I are tearing our hair out trying to find a book about an owl and a cat. Basically an unlikely friend story where the pair do not get along as the owl hoots all through the night, keeping the cat awake. And the cat bothers the owl in some way too. One night the owl saves the cat from danger (or these roles could be vice versa, I’m almost 40 and this was 53 years ago) and they find respect for each other.
Lost Classics of Teen Lit: Name That Book! 