Cats, dogs, walruses, all captioned for your pleasure.

icanhascheezburger

Sort of the quentissential lolcat site these days, even if not very old.

ihasahotdog

It’s sister (?) site. Featuring more canines, less felines.

O RLY gallery

Including the notorious (and adorable) owl.

lolpresident

The name says it all.

lolpresidents on fark

Same concept. But that’s okay.