Cats can eat spider plants. Spider plants are non-toxic, and cats will not be poisoned if they eat them. However, it is best not to let cats eat plants randomly to avoid eating poisonous plants. If your cat likes to eat plants, it is likely that there are too many hair balls in its belly. You can buy some hair removal cream or plant some wheat straw for it to eat.

Plants that cats cannot eat:

1. Lilies: Lilies are fatal to cats. All lily plants are poisonous to cats, even in small amounts. It poses a great threat to the cat's life.

2. Dieffenbachia: The rhizomes and tubers of Dieffenbachia can cause nausea, vomiting, abdominal pain, diarrhea, and in severe cases, cats may gradually become comatose and die.

3. Pothos: Pothos is slightly toxic. If eaten by mistake, adverse reactions such as diarrhea, vomiting, drooling, and difficulty swallowing may occur.

4. Rhododendron: It is highly toxic to cats all over the body. Rhododendron can irritate the cat’s gastrointestinal tract, causing diarrhea and vomiting, shortness of breath, decreased blood pressure, etc. In severe cases, it can lead to coma or even death.