Flea and Tick 101 | PetMD

Flea and Tick 101

From fleas and ticks to intestinal worms, learn how to spot, treat, and prevent common parasites in dogs and cats.

Protecting Your Dog From Fleas, Ticks, and Other Parasites

How Do Dogs Get Fleas?

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What Do Fleas Look Like on Dogs?

Brittany Kleszynski, DVM

Roundworms in Dogs: Symptoms, Causes, and Treatment

Molly Price, DVM

Hookworms in Dogs: Symptoms, Treatment, and How To Prevent Them

Molly Price, DVM

Man carrying puppy in a field where fleas and ticks may be present. When to start flea and tick treatment for puppies depends on several factors.

When To Start Flea and Tick Treatment for Puppies

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Protecting Your Cat From Fleas, Ticks, and Other Parasites

When To Start Flea and Tick Prevention for Kittens

Jennifer Grota, DVM

What Do Fleas Look Like on Cats?

Barri J. Morrison, DVM

Flea and Tick Prevention and Treatment for Cats

Lauren Jones, VMD

Tapeworms in Cats: Causes, Signs, and Treatment

Jennifer Coates, DVM