"Veg diet" is short for a vegetarian diet, which means not eating meat or fish and relying mainly on plant-based foods like fruits, vegetables, grains, and legumes. Full definition
Again, I can tell you from experience that I know many dogs functioning fine and consuming enough protein on veg diets. (thekindlife.com)
While not a true veg diet, it was close in that is was a low fat calorie restricted with fat being only 30 % of calories and saturated fat 10 %. (nutritionfacts.org)
Many reports of cancer remission / cure after adopting a raw green veg diet for a year, then following their no meat, no dairy, no caffeine, no sugar and no salt diet. (nutritionfacts.org)