Thanks for the clue (sort of gave it away, really) -
The Cat in The Hat
"Lady, the ostensible protagonist, is a fluffy blond cocker spaniel with absolutely nothing on the brain. She's great looking but, let's be honest, incredibly insipid. Tramp, the love interest is a smarmy braggart of the most obnoxious kind, an oily jail bird out for a piece of tail or whatever he can get. "
(The quote does NOT come from Lady & The Tamp)