Avoid parsley for cats entirely — the ASPCA lists it as toxic, with compounds that may increase skin sensitivity to sunlight. For dogs, only tiny amounts of culinary parsley are acceptable; large amounts may cause similar skin reactions. Avoid oils, extracts, and ornamental varieties.
Parsley is a leafy herb sold as flat-leaf and curly varieties, used in soups, sauces, tabbouleh, and garnish mixes. Grown in gardens and sold fresh, dried, and powdered.
Herb blends may include garlic, onion, and salt alongside parsley. Garden chewing and garnish leftovers are common exposure routes.
Dried parsley flakes in soups and seasoning blends are concentrated herb exposure and should be treated cautiously in shared foods.
