Can Cats Get Hookworms From Dogs? | Risk At Home

Yes, cats can pick up hookworms from contaminated feces, soil, bedding, or shared outdoor spots linked to an infected dog.

If one pet in the house has hookworms, the question gets real fast: can the other pet catch them too? In many homes, the answer is yes. Cats do not need to eat dog stool to get infected. They can pick up hookworm larvae from a littered yard, damp soil, dirty paws, shared bedding, or any spot where infected feces sat long enough for the parasite to develop.

That’s why a dog with hookworms is not just a dog problem. It can turn into a whole-house problem. Puppies and kittens are hit harder than healthy adults, yet adult pets can carry hookworms with few outward clues. A cat may look fine while the parasite keeps cycling through the home and yard.

The good news is that hookworms are well known, easy to test for, and usually very treatable when a vet catches them early. The trick is knowing how they spread, what signs to watch for, and what to clean right away so your cat does not keep getting re-exposed.

Can Cats Get Hookworms From Dogs? The Real Risk

Yes, though the dog does not pass a live adult worm straight into the cat in the way many people picture it. Hookworms usually spread through eggs or larvae that leave the infected animal in feces. Once those eggs reach the right outdoor conditions, they hatch and mature into larvae that can infect another animal.

So the bigger threat is not direct dog-to-cat contact. The bigger threat is contamination. If your dog poops in the yard, on gravel, near a patio edge, or in any place a cat later steps through or sniffs, the cat can be exposed. Some hookworm larvae can penetrate skin. Others are picked up when a cat grooms contaminated fur or paws, or eats an infected host such as a rodent.

That also means indoor pets are not fully sealed off from risk. A dog can track contaminated dirt inside. A cat can use a shared porch, enclosed run, or patch of grass. If the dog is newly adopted, visits dog parks, or has missed parasite prevention, the odds rise.

How Hookworms Move Between Dogs And Cats

Hookworms have a simple but stubborn cycle. Infected dogs shed eggs in stool. In warm, moist ground, those eggs hatch and develop into larvae. Those larvae can then infect another host. According to CAPC hookworm guidance, both dogs and cats can carry hookworms, and pets may show no signs while still contaminating the environment.

That silent spread is what makes household transmission easy to miss. You may not see worms in stool. You may not notice illness until the burden is heavy enough to cause diarrhea, dark stools, weight loss, poor coat quality, or low energy.

Common ways a cat gets exposed

A cat can run into hookworms through several routes:

• Walking or lying on contaminated soil or sand
• Grooming paws or fur after stepping through contaminated ground
• Using outdoor spaces where an infected dog defecated
• Hunting and eating infected prey
• Living with a dog that is not on steady parasite control

Outdoor humidity matters. Hookworm larvae do best in warm, moist conditions. Shady yards, damp runs, muddy corners, and soil under decks can hang onto contamination longer than dry concrete in full sun.

What makes spread more likely in a shared home

Multi-pet homes tend to have repeat exposure points. One dog uses the yard every day. One cat roams the same strip of ground, then licks its paws indoors. Cleaning stool late gives eggs more time to mature. Missed deworming doses keep the cycle alive. If one pet is treated and the other is not, the parasite can boomerang back.

The AVMA page on intestinal parasites in cats and dogs notes that hookworms affect both pets and people, which is one more reason to act early instead of waiting for obvious illness.

Signs That May Point To Hookworms In A Cat

Some cats with hookworms look normal at first. Others get sick in small steps. The parasite attaches to the intestinal lining and feeds on blood, so the signs often tie back to blood loss, gut irritation, or poor nutrient use.

Watch for loose stool, black or tarry stool, weight loss, poor body condition, vomiting, a rough coat, or low energy. Kittens may fail to grow well. Severe cases can lead to anemia, pale gums, weakness, and dehydration. That is where things can turn urgent.

The MSD Veterinary Manual entry on hookworms in small animals notes that these parasites are common in dogs and cats, with younger animals at higher risk of severe disease.

What You Notice	What It May Mean	How Soon To Call A Vet
Loose stool	Early gut irritation or mild intestinal parasite burden	Within a day or two if it keeps happening
Black, tarry stool	Digested blood from intestinal bleeding	Same day
Pale gums	Anemia from blood loss	Same day or urgent care
Weight loss	Chronic parasite burden or poor nutrient absorption	Book a visit soon
Low energy	Anemia, dehydration, or ongoing illness	Within 24 hours
Vomiting	Gut upset or another parasite issue along with hookworms	Within 24 hours
Rough coat	Longer-term parasite stress	Book a visit soon
Poor growth in a kitten	Heavy parasite burden or repeated exposure	Prompt visit

How Vets Confirm Hookworms

A fecal exam is the usual starting point. Your vet checks a stool sample for hookworm eggs, and in some cases may use added testing if suspicion stays high. One clean sample does not always end the story, since eggs may not show up early in infection or may be shed off and on.

That is why a vet may ask for repeat stool checks, especially in kittens, newly adopted pets, outdoor cats, or homes where a dog has already tested positive. If a cat shows pale gums, weakness, or dark stool, the vet may also check bloodwork to see how much blood loss has occurred.

A home guess is not enough here. Diarrhea and weight loss can come from many causes, and over-the-counter products do not always match the parasite involved. The right drug, dose, timing, and repeat schedule matter.

What Treatment Usually Involves

Treatment often includes a deworming medication chosen for hookworms, then a repeat dose or follow-up plan based on the cat’s age, health, and exposure level. If the cat is frail or anemic, the vet may add fluids, diet changes, iron checks, or other care.

One trap pet owners hit is treating the sick pet and stopping there. If the dog remains infected, or the yard still holds larvae, the cat can get infected again. In many homes, the smarter move is a house-wide plan: test all pets, treat all pets that need it, clean shared areas, and tighten up stool removal every day.

CAPC advises regular parasite testing and year-round broad-spectrum parasite control for dogs and cats. That steady routine matters more than one dramatic cleanout after a bad flare.

How To Stop Reinfection In A Multi-Pet Home

If your dog has hookworms, think in layers. Treat the pet, clean the environment, and block fresh exposure. You do not need a fancy setup. You need speed and consistency.

Cleaning steps that matter most

Pick up dog stool as soon as possible. Same day is good. Right away is better. Eggs need time in the environment before they become infective larvae, so fast cleanup cuts the cycle short.

Wash pet bedding in hot water. Clean crates, litter-adjacent mats, feeding areas, and any hard surfaces that may collect dirt from paws. Indoors, vacuuming and routine floor cleaning help remove tracked debris, though chemical cleaning alone will not fix an outdoor soil problem.

For outdoor areas, focus on access and moisture. Keep cats away from spots the infected dog used as a toilet. If one corner of the yard stays wet and shaded, that is not the place for shared lounging. Gravel, bare soil, and sandbox-like areas deserve extra care.

Prevention Step	Why It Helps	Best Rhythm
Pick up dog stool fast	Stops eggs from maturing in the environment	Daily, right after bowel movements when possible
Wash bedding and soft items	Lowers contamination from paws and fur	At least weekly during treatment
Test all pets in the home	Finds silent carriers	As advised by your vet
Use steady parasite prevention	Cuts repeat infection	Year-round
Limit access to dirty yard zones	Reduces skin and paw exposure	During treatment and cleanup period
Wash hands after cleanup	Lowers human exposure from contaminated material	Every cleanup

Can People Catch Hookworms From Household Pets?

Yes. People can be exposed to zoonotic hookworm larvae from contaminated soil or sand. The usual human issue is a skin condition called cutaneous larva migrans, where larvae move under the skin and cause itchy, winding tracks. The CDC page on zoonotic hookworm explains that dogs and cats can spread hookworms to people through contaminated ground.

That does not mean every infected pet will infect a person. It does mean you should take yard hygiene and stool cleanup seriously. Kids who play barefoot, adults who garden with bare hands, and anyone sitting on contaminated soil or sand are at higher risk.

Simple habits go a long way: shoes outdoors, gloves for yard cleanup, handwashing after litter or stool handling, and prompt vet care when a pet tests positive.

When The Situation Needs A Faster Vet Visit

Book quickly if your cat is a kitten, has dark stool, pale gums, weakness, vomiting, or poor appetite. Those signs can point to blood loss or dehydration. Do not wait around for visible worms in stool. Many owners never see them.

If your dog has a confirmed hookworm infection and your cat starts showing digestive trouble, tell the vet both parts of the story. That shared household detail can speed up testing and treatment choices.

What Pet Owners Should Do Next

If your dog has hookworms, assume your cat has been exposed until your vet says otherwise. Get stool testing done for both pets, start the treatment plan your vet sets, clean up feces fast, wash shared items, and tighten parasite prevention for the whole home.

That approach is what breaks the cycle. Hookworms thrive when contamination sits unnoticed. They fade when pets are treated, the yard is kept clean, and repeat exposure is cut off.