Can dogs eat lemons?

No — too acidic

No. Lemons are too acidic for dogs and the peel contains compounds that cause vomiting and digestive upset.

The full picture

Lemons are one citrus to avoid. Extreme acidity combined with peel essential oils (limonene, linalool) causes stomach upset, vomiting, and irritation. Most dogs avoid lemons instinctively, but some will eat lemon-flavoured yogurt or discarded wedges. Lemon juice, lemon zest in baking, and lemony dressings are all off-limits. Limes have the same issues.

If your dog has already eaten lemons

Risks to watch for

  • Severe GI upset
  • Vomiting
  • Skin irritation from peel oils
  • Photosensitivity in rare cases

Safe portion size

None.

Safer alternatives

  • Blueberries
  • Apple slices

Related foods

Oranges yes Grapefruit caution
Important: This page is general information, not veterinary advice. Every dog is different, and individual factors (age, breed, health conditions, medications) can change what's safe. If in doubt, always contact your vet — or the ASPCA Animal Poison Control Center on (888) 426-4435 or Pet Poison Helpline on (855) 764-7661 in the UK.