How dangerous are the active ingredients?
They are poisonous in all parts of the plant, the narcissi. The bulb stands out in particular. They contain the highest content of alkaloids. Even half an onion can mean the death of a cat. You can recognize that your cat has been poisoned by the following symptoms:
Do not despair, but act quickly
If your cat is poisoned, you should act quickly. See a veterinarian. Give the animal plenty of fluids. If available, the cat should swallow activated charcoal at home. Acting quickly can make the difference between life and death.
Daffodils are not only poisonous for cats. Dogs, horses, hamsters, birds, and the like (especially curious young animals) also run the risk of being poisoned by these early bloomers.