Ku-Ku the kitten was top cat in the battle of the robo-pets in 2000, but guess which bionic beast got to snuggle up to Janet Jackson?

Aibo ERS-210, Sony's second-generation "entertainment robot," couldn't even claw its way into the Nikkei Business magazine's top-10 best-selling robotic pets of 2000.

Nor did it appear in the top-30 hit product list of Nikkei's Trendy magazine. (Sega's Poo-Chi robo-dog panted home at No. 16).