Can dogs eat lemons?
No, lemons are not something to feed your dog. The flesh isn't toxic, but lemon juice is very acidic and the rind contains psoralen, which is toxic to dogs. If your dog ate a whole lemon or a rind, contact your vet right away.
Updated:
Why
The ASPCA lists the lemon plant as toxic to dogs because of essential oils and psoralens, while noting that the fruit is edible and that the skins and plant material cause the problems. AKC agrees the flesh isn't toxic but advises against feeding lemons, and PDSA lists them as unsafe because they are very acidic and can upset the stomach. Lemon juice contains a lot of citric acid, the rind contains psoralen and, if swallowed, can cause a stomach obstruction. We use 'not recommended' rather than a stricter level because the flesh itself is not toxic and the danger lies in the rind, juice and plant; most dogs avoid lemons because of the strong smell.
Signs to watch for
- Vomiting
- Diarrhoea
- Depression (low energy, seems down)
- Skin irritation
What to do
If your dog has eaten a whole lemon or a rind, contact your vet right away. Keep lemonade and lemon sweets away from your dog too, because of the sugar.
Questions and answers
Can dogs have lemon juice or lemonade?
No. Lemon juice contains a lot of citric acid, and sweet lemon products like lemonade are not recommended because too much sugar can lead to obesity.
Related foods
All foods: What can dogs eat?Sources
- Can Dogs Eat Lemons? — American Kennel Club, Sassafras Patterdale (updated 2025-07-29)
- Toxic and Non-toxic Plants: Lemon — ASPCA Animal Poison Control
- Safe fruit and veg for dogs — PDSA (no date)
General information from the sources below, not reviewed by a vet and not a substitute for veterinary advice. When in doubt, call your vet.
How kids practise this in PetPrep
In PetPrep a child looks after a realistic dog: meals at the right times, water, walks and care. Knowing what is safe to share is part of being ready for a real pet.