Agility maven Monica Percival started Clean Run, a weekly newsletter about the sport of dog agility that has expanded into a magazine and a full line of products.
Tim Racer and Donna Reynolds, co-founders of BAD RAP, are among the leaders in Pit Bull rescue; the group’s outreach and training programs have made a life-or-death difference for hundreds of dogs.
Jane Russenberger, an expert in dog training and behavior, has served as senior director of breeding and placement for Guiding Eyes for the Blind for more than 20 years.
Michael Sapp founded Paws for a Cause, a national organization that trains assistance dogs for the disabled and hearing impaired.
Peter Savolainen, a geneticist at the Royal Institute of Technology in Stockholm, Sweden, studies dog mitochondrial DNA; he has posited that domestic dogs were domesticated 16,000 years ago in Southern China.
Peter Singer, an Australian philosopher and Princeton professor, sparks controversy with his views on animal ethics and his support of the animal liberation movement.
Sue Sternberg, an expert on dog aggression, created the Assess-a-Pet, an innovative (and controversial) method of evaluating temperament of dogs in shelters.
Sheila Styron, former president of Guide Dog Users, successfully campaigned to allow guide dogs to travel to Hawaii without a quarantine period.
Stephen Withrow established the Colorado State Animal Cancer Center, the largest of its type in the world, which works to improve the prevention, diagnosis and treatment of cancer in pet animals.
Thanks to Charlene and Larry Woodward, the dog world has Dogwise, a one-stop shop for books, DVDs, hand-selected toys, foods, supplements and other useful goods.
Susan Wynn is famous for her work in pet nutrition counseling, as well as her four books on the integration of holistic medicine into traditional veterinary practices.