Groomers must be prepared to handle shy dogs, aggressive dogs, old dogs, squirmy dogs, and frightened dogs and do so gently and firmly. They bathe, brush, comb, trim, shave, clip nails, clean ears, and do flea treatments. Groomers can work out of their own homes with a few clients, can work for another groomer or in a pet supply store or veterinary clinic, or can open a shop of their own. Grooming is hard work, especially on hands, wrists, and shoulders, but good groomers can make a comfortable living. Some trainers run group classes to help owners learn how to teach dogs to have good manners.
Some trainers work with owners who want to compete in obedience or agility competitions.
And some train the dog. Good dog trainers attend seminars in various training methods, read lots of training books, and observe other trainers at work after they have trained dogs of their own. You can get started by joining a 4-H club or taking your pet through classes at an obedience club. Just offer to help a neighbor, friend, or relative by taking care of a pet while they are on vacation or walking the dog once or twice a day. You can make a few dollars this way and learn about different kinds of dogs.