For more information you can check out a few recent articles on them. The Cloverdale Reveille wrote a good article on December 10, 2014 covering their journey called Where’s Bixby? Bicyclist and his dog travel through town. On October 27, 2014 BikePortland.org also wrote this article: Bixby and her human (Mike Minnick) roll through Portland.
During the visit in Petaluma Bixby & Mike gave the following post on his Twitter page.
What a fun party today at Yuba World Headquarters. The Cuddle Shuttle from Petaluma Animal.Shelter came out and… http://t.co/LG0r8mLgqG
— Wheres Bixby (@WheresBixby) December 14, 2014
Here is the video of his visit to the Petaluma Animal Shelter.