The Bobo site is loading normally for me in IE 6.0. I have to say I love Puppy Angel, but don't love the Bobo site's prices... If you're not a big spender, you're not really missing out. The shipping prices they have listed on their site made me wince.
Poochtini is worth checking out when they get their site working properly again (half of their items aren't showing up atm). They're Toronto-based I believe--someone posted about them in another thread... and they'll deliver for free to some Toronto locations. But either their sizing is a bit weird or my dogs are unusually long. Looked like some decent prices on some things though.
I believe
Barking Beauties is Ontario-based. You can select to see all items on their site in Canadian currency. They stock items from a few designers, including PA and Louis Dog, but the clothes generally aren't cheap.
Pugpuppies.ca sells a couple things... several types of the Puppia harnesses anyway. Also Ontario-based.
And finally
designerduds4dogs.com is based in Guelph, ON I think and sells some Puppia items--clothing, harnesses, etc. I just found the site from a Kijiji ad tonight... appears to be pretty new.
Having listed all of those Canadian sites--I should mention I've only ordered clothes from the US so far. As much as I'd like to support Canadian sites, I'm a bit of a bargain hunter and just haven't been coming across bargains up here. My favourite orders so far were from:
http://www.prettyyoko.com/ (I got loads of cute items pre-Christmas when they first went on sale--great deals imo for some really cute stuff. Since I ordered so much, I had it sent to my uncle in NY to get free shipping and avoid duty taxes though.)
http://www.shopstump.com/ (Currently low on stock though--only the leftovers from a big sale are left basically. She applied the free shipping deal to my (> $50) order as well even though it was to Canada... and I had her mark it as a gift and I had no taxes to worry about. I'm not sure if she would still include Canadian orders... I would ask first.)
http://shoptickledpinkboutique.com/ (I loved her Tiffany harness idea... she also was happy to mark my package as a gift and shipping was reasonable.)