Pet Projects 5 ways to unleash profits in the $10 billion pet industry.

Fifty-nine percent of all American households have pets,according to the American Veterinary Medical Association. Thistranslates into $10 billion per year in revenues for pet-relatedbusinesses, and animal-loving entrepreneurs are discovering moreand more products and services to keep the industry growing.Here's a rundown of five hot pet businesses to start now.

Karen Roy is a freelance business writer in Richmond,California.