Are lemons toxic to dogs?

Toxicity: Toxic to Dogs, Toxic to Cats, Toxic to Horses Toxic Principles: Essential oils and psoralens Clinical Signs: Vomiting, diarrhea, depression; potential dermatitis. read more

Apart from the fact that your dog may reject the sour taste, it's very important to keep your pet away from lemons. The ASPCA notes that the fruit is indeed toxic to dogs, and also to horses and cats, for that matter. The poisonous components are the psoralen compounds and the aromatic oils. read more

No, but the acidic fruit can cause upset stomach, vomiting, weakness and diarrhea if large quantities are ingested. Large quantities can cause other issues, too. read more