Can dogs eat lemons & limes?

Only with precautions. Citrus flesh in small amounts is not toxic, but lemons and limes are so acidic and so packed with psoralen compounds in peel and seeds that dogs who bite into them often react strongly — drooling, vomiting, even light sensitivity at higher exposures. There is no reason to offer them. The sour face says everything.

Watch for drooling, vomiting, diarrhea, photosensitivity from psoralens in quantity. Symptoms may appear within hours; when in doubt, call your vet.

Assess how much was eaten and whether seeds, pits, shells or seasoning were included. Small plain amounts usually need monitoring only; large or seasoned amounts warrant a call to your vet.