How Often Should You Deworm Your Dog?
Quick Answer
Adult dogs should be dewormed every 3 months (4 times a year). Puppies need deworming every 2 weeks from age 2 weeks until 12 weeks, then monthly until 6 months old.
Worms are silent. Your dog can carry roundworms, hookworms, or tapeworms for weeks before showing any symptoms — and some of these parasites can spread to humans, especially children. By the time you notice something is off, the infestation is already advanced.
Detailed Breakdown
The right deworming schedule depends on your dog's age, lifestyle, and risk factors.
By Age
Puppies (2 weeks to 6 months) Puppies are almost always born with worms passed from their mother. Start deworming at 2 weeks old, then repeat every 2 weeks until 12 weeks. After that, deworm monthly until 6 months old.
Adult dogs (6 months+) Deworm every 3 months — that's 4 times a year. This is the standard recommendation from most veterinary associations worldwide.
Senior dogs (7+ years) Same schedule as adults — every 3 months. Senior dogs may have weaker immune systems, making regular deworming even more important.
By Risk Level
Some dogs need more frequent deworming:
- Hunting dogs or dogs that eat raw meat — monthly
- Dogs living with young children — every 2-3 months
- Dogs in multi-pet households — every 2-3 months
- Dogs with a history of worm infections — as directed by your vet
- Dogs in rural areas or near livestock — every 2-3 months
Common Worm Types
| Worm Type | How Dogs Get It | Symptoms | |-----------|----------------|----------| | Roundworms | Mother's milk, contaminated soil | Pot belly, vomiting, diarrhea | | Hookworms | Skin contact with contaminated soil | Weight loss, anemia, bloody stool | | Tapeworms | Swallowing fleas, eating raw meat | Rice-like segments near tail | | Whipworms | Contaminated soil or water | Chronic diarrhea, weight loss | | Lungworms | Eating slugs or snails | Coughing, breathing difficulty |
Signs Your Dog May Have Worms
- Scooting or dragging their bottom
- Visible worms in stool or around the tail
- Unexplained weight loss despite normal appetite
- Dull coat and low energy
- Vomiting or diarrhea
- Pot-bellied appearance (especially in puppies)
Pro Tips
- Combine with flea treatment — fleas carry tapeworm eggs, so flea prevention and deworming go hand in hand
- Weigh your dog before each dose — underdosing is the most common reason deworming fails
- Use a broad-spectrum wormer — it covers multiple worm types in one treatment
- Keep a record — it's easy to lose track of quarterly treatments, which is exactly why a tracker helps