Thanks to the efforts of many celebrities over the past couple of decades, accessories for dogs are now big business. That includes designer dog leads, designer dog coats, special collars and shoes, and dog perfumes. That's not perfume which is designed to make a dog smell attractive; we're not trying to create a doggy hookup service here. It's to stop them smelling bad.
A lot of people love the idea of owning a dog but are less thrilled about wet dog smell getting on their clothes or furniture; especially business people who can't turn up to work smelling like they just crawled out of a kennel. They'll happily buy dog perfume. Dog perfume can be bought on the internet. You don't need to design your own, just become a retailer and find the right client base. Is there a large, well-to-do office building near you? If so, the right clients are probably all in there!