Vegetarian Dogs

Dental Chews:
Everlasting Treats
Pegetables
Pup-rrr-Mint Sticks
Zuke's Z-Ridge

Food:
Evolution Diet
Nature's Recipe
Natural Balance Vegetarian Formula
Petguard Vegetarian Dry Food
Petguard Vegetarian Canned Food
Petguard Vegan Canned Food
Veg-to-Bowl
V-dog
Yummy For Dogs (recipes)

Recommended Reading:
Obligate Carnivore, Jed Gillen
Vegan Dog Nutrition Association (links to articles, books and other resources)
Vegan Dog Nutrition (online book), James O'Heare

Treats:
Buddy Biscuits
Dawg Gone Delicacies (Baltimore based)
Petguard: Mr. Barky's and Mr. Pugsly's
Yummy For Dogs (recipes)