1. Aibo
About the size of a Chihuahua but a lot less annoying, Sony's robotic dog was much beloved by some, but not enough. Sony filled the pets with personality through software that also gave owners the joy of raising a dog from puppyhood, sans the messy newspapers. The company continued to add features during the dog's seven-year life span. Late models could sing, recognize faces and voices, and speak 1,000 words. The dog could even blog by posting photos from its built-in camera. But the price of about $2,000 discouraged a mass market for the herky-jerky pets. Sony discontinued Aibo in 2006 amid aggressive belt-tightening.
And the list goes on ...
