Joann's has a fabric that has dogs doing yoga poses and they are dressed in yoga clothes. It was really cute! Ours just got it in this week. I think the background is pink. I don't recall the manufacturer. Here it is. There is a cat one, too.
http://www.joann.com:80/joann/search/searchall.jsp?keyword=yoga&catPath=All%20Products////Product%20Home////UserSearch1=yoga&_requestid=725103
Or go to
http://joann.com and search for yoga
Dog Yoga
[ATTACH=CONFIG]131008[/ATTACH]
cat yoga
[ATTACH=CONFIG]132153[/ATTACH]