Despite their look, lilies will be extremely poisonous to each dogs and cats.
Lilies from the Hemerocallis (also called daylilies) and Lily species (suppose basic lily flowers) are very harmful to cats. Eating any a part of the plant, grooming pollen from their coat and even consuming water from a vase of lilies will be probably deadly and trigger acute kidney failures.
Whilst these are much less of a danger to dogs, cala lillies, peace lilies and lily of the valley are all thought of harmful.