Jay Miner's dog, a black and white female Pomeranian.
Mitchy the dog set the atmosphere at Hi Toro, the company that designed the
Amiga. It is told, that Jay showed his chip designs to Mitchy, who would wag her tail or look elsewhere. If the design was approved, it went in the chip.
Look out for Mitchy's paw print under your
Amiga 1000 top cases.
Oh, and by the way, this is all the info I've ever been able to find about Mitchy!