The next door neighbor girl has a trek 4300 with a basket on the front. In which she carries her chihuahua/Pomeranian mix and her 5 week old chihuahua pup, or the ROTTIE pup. I think she will put all three in there occasionally, but man it's a lot of dog.
Other dogs on bike stories: Somebody rides a Cannondale mtn bike in Claremont/La Verne with a Pomeranian? in his backpack. He's pretty good to, I've never been going the same way as him, but it looks like he flies through the singletrack.