Here's a few places to look:

http://www.pooch.ca/shopdisplayprodu...s%3C%2Ffont%3E

HMMMM....(don't let hubby see the hat in this link! Good doggie boots, though!)
http://www.davidmorgan.com/product_i...FRZjnAod3BxZVg


http://litelantes.org/docs/ryerson/c...mpetitors.html
http://www.muttluks.com/ (They are in Toronto - but heck, check them out)

You can click to enlarge the pics of the boots here, but there's no description - so you might want to contact them.
http://rockymountaincanine.ca//catal...hp?cPath=21_30
Here's the contact info:
http://rockymountaincanine.ca/Contact_Us.html