I bought Julius the Bored Cat two "Cat Sitter" DVDs, which are full of tantalizing footage of birds and gerbils and squirrels and things like that. Julius likes to lie on our bed and watch (the TV, not us!!!!!!)
"If you don't have a squirrel for me, I don't want to know."
"Can't you see I'm busy watching Bird TV? Now get lost and let me return to my finch fantasies!!"