Most brands labelled vegetarian are actually in fact vegan, they just don't feel they need to make such a distinction for dogs. Dogs don't particularly favor dairy, and although some dogs can digest dairy fine, many can get acute intestinal distress, so therefor you wouldn't typically find it in dog food. What really matters is whether it's organic or not. Unfortunately I don't believe V-Dog's dog food is organic. The only thing organic V-Dog sells is their 'Wiggle Biscuits'. If you want vegan & organic, there's a brand called "Pet Guard" available on Amazon @ https://www.amazon.com/Pet-Guard-Vegetarian-Food-4-4-Pound/dp/B000VK8CL8/ref=as_li_ss_tl?&linkCode=sl1&tag=tdt01-20&linkId=85dca850bbc534f0b712e871ca07d40e - Natural Core is another brand that's organic & vegan as well. There is a significant difference between organic and GMO in regards to your health. All my pets typically live over double there age, and I believe a vegan/organic diet is the reason for it. Glad to see you make these diet considerations for your dog though, I hope people follow your lead and you start a trend :)
Another Organic/Vegan brand is 'Halo Holistic Vegan Dog Food'. I haven't looked much into it but it seems to be well-reviewed. Natural Balnce's vegetarian type is not organic. They currently only have an organic option with there dog food containing meat, but I've emailed them requesting that they make a vegetarian version, hopefully they comply.