Add ?image=n to the end of the URL for fine-grained catte selection. I've definitely got some favorites that I'd rather see more of at any size :3

http://placekitten.com/452/450?image=1 http://placekitten.com/452/450?image=4 http://placekitten.com/452/450?image=5 http://placekitten.com/452/450?image=6 http://placekitten.com/452/450?image=9 http://placekitten.com/452/450?image=12 http://placekitten.com/452/450?image=13 http://placekitten.com/452/450?image=14 http://placekitten.com/452/450?image=15