I'm curious about how you decided your niche and pricing. Did you do market research? Specifically, talking to dog trainers and see if they would be interested and how much they are willing to pay for your services?
As someone who has tried to sell to niche markets like that before I've found many niches are very stingy with cash. Some of them are likely sole proprietors and what you are asking for their website might be an entire week's pay for them.