Heartworm Resource Center

Where Mosquitoes go, Heartworm Disease May Follow

Only mosquitos transmit heartworms to pets.

Weigh the Cost

The cost of heartworm prevention in dogs is a small fraction of the cost of heartworm treatment.

Look Ma, no heartworms!

Heartworm-free cats are happy cats.

Just 1 heartworm could kill me? (feline)

Most cats with heartworms harbor only a few adult heartworms. But just one adult worm can kill a cat.

Heartworm Life Cycle (Pet Owners)

Think 12 Series: Where there's a will, there's a way for heartworms to get inside. (Dog & Cat)

Indoor pets aren't safe from heartworms.

Think 12 Series: There's no such thing as a heartworm free zone. (Winter)

Keeping pets on year-round heartworm prevention is the best way to protect them from "surprise" infections.

Think 12 Series: Where there's a will, there's a way for heartworms to get inside. (Cat)

Mosquitoes are sneaky and find lots of ways to come indoors. Indoor pets need heartworm prevention, too.

Think 12 Series: There's no such thing as a heartworm free zone. (Desert)

Heartworms have been diagnosed in all 50 states.

Think 12 Series: Protection is priceless. (Dog)

Heartworm disease can threaten your dog's health--and even his life.

Think 12 Series: Heartworms love vacations, too. (Two Dogs)

When you pack for that long vacation, don't forget your dog's heartworm prevention.

Think 12 Series: Heartworms love vacations, too. (Senior Owner)

That warm, sunny vacation spot is probably a safe haven for heartworms. Make sure your dog is protected.

Think 12 Series: Protection is priceless. (Cat)

There's no approved treatment for heartworm infection in cats.

Think 12 Series: Heartworms love vacations, too. (Young Owner)

Warm and sunny? Yes. Mosquitoes? Yes. Heartworm prevention? Yes.

Think 12 Series: Heartworms are always in season. (Hunting)

Make it "open season" on heartworms by giving your dog year-round heartworm prevention.

Think 12 Series: Heartworms are always in season. (Hiking)

Cooler weather doesn't necessarily mean the threat of heartworms is gone.

Think 12 Series: Heartworm protection is spelled L-O-V-E. (Dog)

If you love your dog, protect him from heartworms.

Think 12 Series: Heartworm protection is spelled L-O-V-E. (Cat)

If you love your cat, protect her from heartworms.

Grounded or Unfounded: It's too dry here for heartworms.

Mosquitoes--and heartworms--can be found in desert climates where practices like irrigation and watering provide places for mosquitoes to breed.

Think 12 Series: Best friends deserve the best care. (Dog)

Dogs are loyal friends. Show you love them by protecting them from heartworms.

Grounded or Unfounded: Dogs taking heartworm preventives should be tested every year.

Annual testing is an important component of heartworm management in dogs, even if they're on prevention.

Think 12 Series: Best friends deserve the best care. (Cat)

Heartworm prevention helps keep cats happy and healthy.

Grounded or Unfounded: Treating for ticks and fleas does not protect my dog from heartworm infection.

Not every parasite-prevention product prevents heartworm in pets--some only address pests like fleas and ticks. Read the label and make sure your pet is getting the protection he or she needs.

Grounded or Unfounded: Only dogs and cats get heartworms.

Heartworm don't just infect dogs and cats--from ferrets to foxes, a number of other species get heartworm disease, too.

Grounded or Unfounded: It's too cold here for heartwoorms.

Many areas of the country have cold winters--AND heartworms. Year-round prevention provides the best way to keep your pet safe.