Parasites
The Parasites section explains the internal and external parasites that can affect your pet’s health, offering guidance on how to recognize signs of infestation, prevent exposure, and protect them year-round.
20 articles
All Parasites articles

Cat Ear Mites or Fleas: What’s Bugging Your Cat?
Many cat parents look for answers when a cat starts scratching, shaking its head, or acting uncomfortable, unsure whether the problem stems from cat ear mites or fleas.

Fleas on Cats: How to Spot Them and What to Do Next
Fleas on cats are among the most common external parasites veterinarians encounter, affecting both indoor and outdoor pets equally. These insects trigger itching, skin irritation, flea dirt on cats, hair loss, and, in severe cases, anemia or allergic reactions.

Can Indoor Cats Get Fleas or Worms? The Surprising Answer
Many cat parents assume indoor living provides complete protection from parasites, yet this belief creates a false sense of security. If you ever ask yourself, ‘Can indoor cats get fleas?’

Common Parasites in Cats and How to Prevent Them
Parasites in cats, both internal and external, remain extremely common in kittens and adult cats, including those living strictly indoors. These organisms disrupt digestion, irritate the skin, dull the coat, and undermine overall health.

What Are Roundworms in Dogs? Signs and Treatment Tips
Roundworms rank among the most common intestinal parasites in dogs, especially puppies, and understanding them matters for every household. These long, spaghetti-like worms grow several inches and live inside the intestinal tract, where they steal nutrients and create a heavy burden that disrupts digestion.

Tick-Borne Diseases in Dogs: What Every Pet Parent Needs to Know
Ticks have become increasingly widespread due to climate shifts and changes in wildlife populations, posing a significant threat to dogs across many regions.

Hookworms in Dogs: Symptoms, Dangers, and How to Protect Your Pup
Hookworms are among the most common intestinal parasites affecting dogs, and hookworms in puppies pose the greatest concern. These tiny worms attach to the lining of the small intestine and feed on blood, leading to significant health problems.

Fleas on Dogs: What They Look Like and How to Stop Them
Fleas on dogs are fast-moving, blood-feeding parasites that trigger intense itching, restlessness, and skin irritation, making quick action essential for a dog’s comfort and health. Many dog parents struggle to distinguish normal scratching from signs of fleas on dogs, especially when symptoms resemble seasonal allergies or sensitive skin issues. Clear guidance helps reduce confusion and supports early intervention.

Heartworm in Dogs: How to Prevent This Silent Killer
Heartworm in dogs is a serious yet preventable disease transmitted through infected mosquito bites. Immature worms travel through the bloodstream, settling in the heart and lungs, causing damage often unnoticed until advanced stages. This “silent killer” leads to subtle or absent symptoms of heartworm in dogs in the early stages. As the disease progresses, signs include coughing, fatigue, weight loss, and difficulty breathing.

Permethrin for Dogs

Selamectin for Dogs and Cats

Fluralaner for Dogs and Cats

Moxidectin for Dogs and Cats

Ponazuril for Dogs and Cats

Toltrazuril for Dogs and Cats

Nitenpyram for Dogs and Cats

Praziquantel for Dogs and Cats

Pyrantel Pamoate for Dogs and Cats


