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Signs Your Dog or Cat Has Worms (And When to Treat)

healthy dog and cat together indoors showing no visible signs of worms and good overall pet health

Dogs and cats with worms may show signs such as weight loss, scooting, vomiting, diarrhoea, or a dull coat. Some pets show no symptoms at all, which is why regular checks are important.

Worms often affect both dogs and cats, but they can be hard to notice. Many pets carry worms without clear symptoms, so it helps to know what early signs to look for.

If you’re wondering “what are the signs of worms in dogs?” or “what symptoms do cats show with worms?”, this guide will help you identify the key signs and understand when action may be needed.

Common Types of Worms in Pets

Dogs and cats can be affected by several types of intestinal worms, including:

  • Roundworms
  • Hookworms
  • Whipworms
  • Tapeworms

Each type of worm affects pets in its own way, but most cause similar symptoms.

Signs of Worms in Dogs

Dogs can show different symptoms depending on how many worms they have. If you’re unsure whether your dog has worms, look for a combination of digestive changes, weight loss, and behaviours such as scooting.

Common signs include:

  • Scooting or dragging their bottom
  • Visible worms in faeces
  • Weight loss despite normal eating
  • Bloated stomach (especially in puppies)
  • Diarrhoea or soft stools
  • Vomiting
  • Lethargy or reduced energy

Symptoms of Worms in Cats

Cats often hide their symptoms, but there are still signs you can look out for.

Common symptoms include:

  • Weight loss
  • Vomiting (sometimes with worms visible)
  • Poor coat condition
  • Increased appetite or reduced appetite
  • Diarrhoea
  • Worm segments around the tail

When to Treat Worms in Dogs & Cats

It’s just as important to know when to treat worms as it is to spot the signs.
You should consider treatment if:

  • You notice any of the symptoms above
  • Your pet has not been treated regularly
  • Your pet spends time outdoors
  • Your pet hunts or scavenges

Pets can still have worms even if you don’t see any symptoms.

Why Some Pets Show No Symptoms

One of the hardest things about worms is that pets often seem perfectly healthy.
This is because:

  • Low-level infestations may not cause obvious symptoms
  • Worms can develop gradually
  • Pets may compensate for mild discomfort

That’s why it’s important to give regular preventative care and check your pet often.

How Worms Affect Your Pet’s Health

If worms are not treated, they can harm your pet’s health over time.
Potential effects include:

  • Nutrient deficiencies
  • Poor growth in young animals
  • Digestive issues
  • General discomfort

Sometimes, worms can spread to people, too, so preventing them helps keep everyone in your home safe.

Can Humans Catch Worms From Pets?

Certain worms can spread from pets to people, especially if you have a lot of close contact with your animals.

Children are more at risk because they might touch soil, surfaces, or pet waste that has worms.

To lower the risk, try these simple steps:

  • Wash your hands after touching your pets or cleaning up after them
  • Keep living areas clean
  • Make sure your pet gets regular worm treatments

Maintaining good hygiene and regular care helps keep both your pet and your family safe.

Healthy dog and cat resting together, showing no visible signs of worms and good overall pet condition.

Signs vs Severity (Quick Guide)

ModeratePossible Severity
Occasional scootingMild
Weight lossModerate
Vomiting wormsModerate to severe
Bloated stomach (puppies)Severe
LethargyModerate

What To Do If You Suspect Worms

If you think your pet may have worms:

Step 1: Observe Symptoms

Take note of any changes in behaviour, appetite, or digestion.

Step 2: Check Regularly

Look for visible signs such as worms in faeces or around the tail.

Step 3: Take Action Early

Treating worms early can stop problems from getting worse and keep them from spreading.

How to Help Your Pet After Finding Worms

If you notice signs of worms in your pet, taking action right away can help keep them healthy.

There are different treatments for dogs and cats that target common intestinal worms and help stop them from coming back. The best choice depends on your pet’s age, weight, and lifestyle.

Here are some products that are often used:

Always follow the instructions on the product or ask your veterinarian for advice when choosing a treatment.

Preventing Worms in Dogs & Cats

The best way to protect your pet is to prevent worms in the first place.
Tips:

  • Maintain a regular worming schedule
  • Keep living areas clean
  • Avoid exposure to contaminated environments
  • Monitor your pet’s health regularly

Supporting Your Pet’s Overall Health

Looking after your pet’s health means more than just controlling parasites.

You may also find these helpful:

Frequently Asked Questions

What are the signs of worms in dogs?

Common signs include scooting, weight loss, diarrhoea, vomiting, and visible worms in faeces.

What symptoms do cats show with worms?

Cats may show vomiting, weight loss, poor coat condition, or worms near the tail.

Can pets have worms without symptoms?

Yes, many pets show no symptoms, especially in the early stages.

How often should pets be checked for worms?

Regular monitoring is recommended, especially for pets that go outdoors.

Are worms dangerous for pets?

If untreated, worms can affect nutrition, growth, and overall health.

Keeping Your Pet Healthy & Worm-Free

If you’ve seen signs of worms or just want to keep your pet healthy, take a moment to review how you manage parasites. The right routine can help your dog or cat stay healthy, comfortable, and protected all year.

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