Lisa Horne, who used to work for the RSPCA and a vets surgery, spotted a niche in the market for her business Healthy Paws.
She said she was fed up of seeing dogs with so many medical problems which all stem from a bad diet.
She won £100,000 to bolster her fledgling range of "holistic" foods which are free from additives.
The 37-year-old said: "It has been hard, but it's all been worth it.
"I started off researching and testing before I hand-baked special dog treats before taking them into production.
"I just wanted things to be better for the dogs."
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