Pet sitting is one of the easiest professions to dabble in while in high school because a degree is not required. Try pet sitting for a neighbor or family member to get a sense of the responsibilities of the job. Some pet sitters hire assistants on an independent contractor basis; contact an area pet sitter listed in the phone book or with one of the professional organizations, and see if you can "hire on" for a day or two. Not only will you learn firsthand the duties of a pet sitter, but you'll also see how the business is run.

There are many books, newsletters, and magazines devoted to pet care. Magazines such as Pet Sitters WORLD, which is published by Pet Sitters International, can teach you about the requirements of professional animal care. And there are any number of books discussing the ins and outs of small business ownership.

If you live in a big city, you've seen them hit the streets with their packs of dogs. Dragged along by four or five leashes, the pet sitter walks the dogs down the busy sidewalks, providing the animals their afternoon exercise while the pet owners are stuck in the office. You may not have realized it, but those dog walkers are probably the owners of thriving businesses. Though a hobby for some, pet sitting is for others a demanding career with many responsibilities.

For those who can't bear to leave their dogs or cats at kennels or boarders while they are away, pet sitters offer peace of mind to the owners, as well as their pets. With a pet sitter, pets can stay in familiar surroundings, as well as avoid the risks of illnesses passed on by other animals. The pets are also assured routine exercise and no disruptions in their diets. Most pet sitters prefer to work only with cats and dogs, but pet sitters are also called on to care for birds, reptiles, gerbils, fish, and other animals.

With their own set of keys, pet sitters let themselves into the homes of their clients and care for their animals while they're away at work or on vacation. Pet sitters feed the animals, make sure they have water, and give them their medications. They clean up any messes the animals have made and clean litter boxes. They give the animals attention, playing with them, letting them outside, and taking them for walks. Usually, a pet sitter can provide pet owners with a variety of personal pet care services—they may take a pet to the vet, offer grooming, sell pet-related products, and give advice. Some pet sitters take dogs out into the country, to mountain parks, or to lakes, for exercise in wide-open spaces.

Pet sitters typically plan one to three visits (of 30 to 60 minutes in length) per day, or they may make arrangements to spend the night. In addition to caring for the animals, pet sitters also look after the houses of their clients. They bring in the newspapers and the mail; they water the plants; they make sure the house is securely locked. Pet sitters generally charge by the hour or per visit. They may also have special pricing for overtime, emergency situations, extra duties, and travel.

Most pet sitters work alone, without employees, no matter how demanding the work. Though this means getting to keep all the money, it also means keeping all the responsibilities. A successful pet sitting service requires a fair amount of business management skills. Pet sitters may work directly with animals from 10:00 A.M. until 5:00 or 6:00 P.M., with no breaks, and then upon returning home, will have five to 10 phone messages from clients. Part of a pet sitter's evening then consists of scheduling and rescheduling appointments; offering advice on feeding, training, and other pet care concerns; and giving referrals for boarders and vets.