Toxicity level
MildModerateSevere
- Earthworms can carry parasites
- Varies
- Affects: Gut (parasites)
Did you know? Earthworms aren't toxic but can carry lungworm — worth a vet's parasite advice.
Verdict
Feed only in moderation
Species
🐶 Dogs
Why this verdict for dogs
Earthworms aren’t toxic, but they can carry parasites, and worms from treated soil may have chemicals on them. The odd one is low-risk.
Warning signs to watch for
- Mild stomach upset
- Diarrhea
🍽️ Feeding it safely?
Frequently asked questions
Can dogs eat worms (earthworms)?
In moderation. Earthworms aren’t toxic, but they can carry parasites, and worms from treated soil may have chemicals on them. The odd one is low-risk.
How much worms (earthworms) can dogs have?
None — worms (earthworms) is not safe for dogs and should be avoided entirely. When in doubt, ask your vet.
Is worms (earthworms) safe for cats too?
Verdicts can differ between species. See the cat answer for worms (earthworms) →
More bugs & critters for dogs
By the CanMyPet Editorial Team · Reviewed against ASPCA Animal Poison Control, the American Kennel Club (AKC) and Pet Poison Helpline · Last updated June 22, 2026.
Sources
- ASPCA — People Foods to Avoid Feeding Your Pets
- American Kennel Club — Dog Nutrition
- Pet Poison Helpline — Poison List
CanMyPet provides general information reviewed against trusted sources (ASPCA, AKC, Pet Poison Helpline). It is not a substitute for professional veterinary advice. When in doubt, always contact your veterinarian.