Leeks are toxic to pets. As allium vegetables, they contain compounds that damage red blood cells and can cause anemia even in small amounts. All forms are unsafe — raw, cooked, dried, or powdered.
Leeks are long green-and-white allium stalks in the onion family, used in soups, stocks, braises, and savory pies.
Commonly sliced into broths and sauces where they're less visible than chopped onion. Dried leek flakes, soup bases, and seasoning powders carry the same risk as fresh — cooking does not remove the concern.
Leek also appears in bouillon powders, soup mixes, and spice blends. Kitchen prep scraps — root ends, trimmed greens, peels — easily collect in trash bowls, stock pots, and compost bins.
