We just returned with a Mickey and Pluto food dish, Disney World collar and a mickey head shaped dog tag. These were bought in the magic kingdom, in one of the emporium shops on the left side of Main St as you walk towards Cinderellas Castle.
They also had squeaky toys, leash's, a neat magnet that was a feed the dog reminder which we bought for my in-law's.
There were quite a few other pet goodies there.