Have you read the story of ProfessionalPupperPetter? She's an Imgur poster who works at a doggie daycare center in Seattle. That's right, her username is not ironic or jokey - it's actually extremely spot on. With her shelter hosting from 40 to 60 puppers a day, she has a lot of petting practice! She might even have a degree in it!
But work at the day care is not all fun and games. Walls have to be scrubbed daily, poop has to be shoveled, dogs with special diet have to be separated from others from meal time, and a special time-out place for dogs who get too playful or aggressive has to be both arranged and cleaned. That's some work!