Lemon

Lemon's strong acid and the limonene in its peel and essential oil irritate cats readily, causing drooling, vomiting and lethargy; cats are especially sensitive to citrus oils.

Drooling, vomiting, diarrhoea, poor appetite, lethargy, hiding.

Stop feeding, remove the lemon and contact a vet; treat essential-oil exposure as a poisoning.

Cats need no fruit, so keep lemon juice, peel and lemon essential oil away from them; any treat should stay within about 10% of daily energy intake.

Lemon juice and flesh are strongly acidic and irritate the mouth and gut, while the peel and essential oil carry limonene and other irritants that are harsher still; larger amounts may depress the nervous system.

Drooling, lip licking, vomiting, diarrhoea, abdominal discomfort; peel or oil contact can leave the mouth red and the dog subdued.

Stop feeding and offer water; contact a vet immediately if vomiting, diarrhoea or lethargy persists.

Do not use lemon juice to season food or water, as it readily causes drooling, vomiting and diarrhoea; never feed the peel, seeds or leaves, and keep citrus oils and peel scraps out of reach.