American Animal Hospital Association: “Wellness Exams.”

American Animal Hospital Association: “Vaccinations for your cat.”

American Veterinary Medical Association: “Heartworm Disease.”

U.S. Food and Drug Administration: “Heartworm Prevention in Your Pet.”

American Animal Hospital Association: “Intestinal Parasites.”

American Veterinary Medical Association: “Summer Pet Care Tips.”

American Animal Hospital Association: “AAHA Dental Care Guidelines.”

American Animal Hospital Association: “Brushing Your Pet’s Teeth.”

Cornell University College of Veterinary Medicine: “Feline Leukemia Virus.”

Cornell University College of Veterinary Medicine: “Feline Immunodeficiency Virus.”

Cornell University College of Veterinary Medicine: “Feline Vaccines: Benefits and Risks.”

Association for Pet Obesity Prevention: “Obesity Facts & Risks.”

American Animal Hospital Association: “AAHA Nutritional Assessment Guidelines for Dogs and Cats.”

American College of Veterinary Nutrition: “Frequently Asked Questions.”

ASPCA: “Exercise for Dogs.”

Coleman, K. Preventive Medicine. September 2008; vol. 47: 309-12.

ASPCA: “Furry Friends Need Fun, Too: How to Keep Your Pet Happy and Active.”

The Humane Society of the United States: “Why You Should Spay or Neuter Your Pet.”

American Veterinary Medical Association: “Why you should spay or neuter your pet.”

ASPCA: “Early Spay/Neuter.”

American Animal Hospital Association: “Spaying Older Pets.”

ASPCA: “Where We Stand on Puppy Mills: The ASPCA’s Policy and Positions.”

ASPCA: “Top 10 Reasons to Spay or Neuter Your Pet.”

ASPCA: “Position Statement on Euthanasia.”

American Veterinary Medical Association: “Spaying and Neutering.”

American Animal Hospital Association: “Pain Management for Pets.”

American Veterinary Medical Association: “Frequently Asked Questions about caring for an older pet.”

American Animal Hospital Association: “Skin Problems in Pets.”

American Veterinary Medical Association: “Heartworm Disease.”

American Animal Hospital Association: “Ear infections.”

ASPCA: “Urinary Incontinence.”

ASPCA: “Diarrhea.”

U.S. Environmental Protection Agency: “Taking care of fleas and ticks on your pet.”

ASPCA: “Bad Breath.”

American Veterinary Medical Association: “Feline Lower Urinary Tract Disease.”

Feline Advisory Bureau: “Chronic kidney (renal) failure in cats.”

American Veterinary Medical Association: “Diabetic Pets.”

Cornell University College of Veterinary Medicine: “The Danger of Hairballs.”

ASPCA: “Upper Respiratory Infections.”

The Humane Society of the United States: “Chewing: The Whys and Hows of Stopping a Gnawing Problem.”

ASPCA: “Teaching Your Dog to Come When Called

The Humane Society of the United States: “Separation Anxiety.”

ASPCA: “Barking.”

ASPCA: “Mouthing, Nipping and Play Biting in Adult Dogs.”

The Humane Society of the United States: “Dog Aggression.”

The Humane Society of the United States: “Housetraining Adult and Senior Dogs.”

Cornell University College of Veterinary Medicine: “Feline Behavior Problems:  House Soiling.”

The Humane Society of the United States: “Cat Aggression Toward People.”

The Humane Society of the United States: “Destructive Scratching.”

The Humane Society of the United States: “Dig This: How to Get Your Dog to Stop Digging.”

ASPCA: “Begging at the Table.”

ASPCA: “Teaching Dog Not to Pull on Leash.”

ASPCA: “Whining.”

ASPCA: “Teaching Your Dog Not to Jump Up on People.”

Cornell University College of Veterinary Medicine: “Cats That Lick Too Much.”

ASPCA: “Meowing and Yowling.”

The Humane Society of the United States: “Fearful Cats.”

ASPCA: “Keeping Your Cat off Countertops and Tables.”

ASPCA: “Nighttime Activity in Cats.”

ASPCA: “End-of-Life Care FAQ.”