Pepe Le Pew makes a cameo during the Spring time when the animals fall in love.
Professor Beest Lee is a pun on Beastly.
Acme, the WB supplier of choice, has gone into the egg production business here.
Animal astronauts were indeed the first passengers into space during the early days of rocket travel. The rabbit shown here bears a striking resemblance to Bugs Bunny, as does his Martian bunny spouse.