Stimpy's eyes are briefly drawn as only big black dots during "Stimpy's Breakfast Tips".
Ren tried to convince the men who were giving Stimpy his prize money how much he loves Gritty Kitty Litter by trying to eat the litter. But cats don't eat kitty litter, they poop or urinate in it.
During the smell test, when Mr. Horse smells cat box "B" the label momentarily says "A"