Philodendron Birkin are an extremely popular plant, but they contain calcium oxalate crystals, which are toxic to humans and animals. If your cat or dog eats Philodendron it can result in spasms, seizures, pain, and swelling. Philodendrons are more toxic to cats than to dogs. Certain types of philodendrons are more toxic than others.

Devil’s Ivy can help remove impurities in the air, but they can irritate your pet’s digestion system resulting in drooling, choking, swelling of the throat and mouth, difficulty breathing, and stomach upset.

Only certain lilies are toxic, the most toxic ones include the Calla Lily, Easter Lily, Rebrum Lily, Tiger Lily, Day Lily, and Asian Lilies. Cats are more susceptible to lily poisoning than dogs are. If ingested, the lily will irritate the digestive system and kidney failure can occur. Cats will appear lethargic, vomit, and have a loss of appetite.

5. Aloe Vera

Aloe Vera is great for human skin but if ingested by dogs or cats it can result in vomiting, depression, diarrhea, anorexia, tremors, and a change in urine color.

6. Daffodils

The beautiful bulbs of the daffodil are its most poisonous part. If consumed in large amounts, daffodils can cause convulsions, low blood pressure, tremors, and cardiac arrhythmias.

7. Poinsettia

9. Holly

The spiky leaves of this holly-day favorite can do some damage to a cat or dog’s digestive system. Certain varieties are more toxic than others.

10. Tomato Plant

The seemingly harmless and very common Tomato Plant causes severe digestion problems for cats and dogs. If consumed, the animal will appear drowsy, confused, and weak. Tomato plants cause diarrhea and a lowered heart rate.

11. Carnation

It is unknown why the common Carnation is toxic. However, if your pet eats it do not be too concerned. It only causes mild stomach upset and dermatitis.

13. Amaryllis

The beautiful Amaryllis has been known to cause general upset stomach, anorexia, and tremors.

14. Azalea

Ingestion of even a few Rhododendron leaves can cause serious problems! The toxic principle interferes with normal skeletal muscle, cardiac muscle, and nerve function. Clinical effects typically occur within a few hours after ingestion. Signs that your pet has ingested Rhododendron include vomiting, diarrhea, hypersalivation, weakness, coma, hypotension, CNS depression, cardiovascular collapse, and death.

15. Begonia

There are more than 1,000 species of Begonias! The most toxic form is the Tuberous Begonia which causes severe irritation of the digestive system.