(Please click through to Think Geek. They might be having a sale!)
In terms of animated pets of the 80s, nobody wanted Scooby Doo as a pet, unless you got the Mystery Mobile and all the other awesome characters that went with poor scaredy Scoob. But everybody wanted Cringer. Green. Pet. Tiger cub. Need we say more? But then he totally flips out in his transformation sequence, and he transforms into Battle Cat, a fierce beast that He-Man can RIDE... Referenced in Ready Player One.