Spuds McKenzie: what a playah! What a dog playah! What a dog playah with human girlfriends...er...right.
The "twist ending" to a recent AirWick air-freshener commercial is that the talking elephant housewife's husband is a many-stinky-shoed centipede. In fact, many of that ad campaigns pairings are interspecies romances. Same-species romances are the minority.
If you are asking, the other ones are chimpanzee-skunk, giraffe-boar and penguin-bear. The last one's sons are pigs.
Fruit By The Foot has a commercial with a female lizard getting attracted to a young human male after mistaking the long strip of gum stretching from his mouth for a prehensile tongue.
Pretty much all of the Orangina ads, but especially the big musical number with the bear and the deer.