Monstera

Yes, Monstera deliciosa is toxic to cats. The plant contains insoluble calcium oxalate crystals that cause immediate oral irritation, intense burning of the mouth, tongue, and lips, excessive drooling, vomiting, and difficulty swallowing.

Onset is fast — sometimes within 30 seconds of chewing. Your cat may suddenly paw at its mouth, shake its head, drool heavily, foam at the lips, and vomit once or twice. Visible swelling of the tongue or lips can occur. Most cats recover within 24 hours, though signs may take up to 48 hours to fully resolve.

Remove any plant fragments from your cat's mouth and rinse gently with cool water. Offering a small amount of milk or plain yogurt can help bind the oxalate crystals and ease the burning. Then call ASPCA Animal Poison Control (888) 426-4435 or Pet Poison Helpline (855) 764-7661. Do not induce vomiting unless a veterinarian instructs you to.

The irritation comes from insoluble calcium oxalate crystals embedded in the plant's tissues. When chewed, these microscopic crystals are mechanically driven into the soft tissues of the mouth and throat, causing immediate pain and inflammation. The effect is physical rather than chemical, which is why symptoms begin within seconds of contact.

Yes, monstera (Monstera deliciosa) is toxic to dogs. The plant contains insoluble calcium oxalate crystals that act like needles on soft tissue, causing oral irritation, excessive drooling, pawing at the mouth, vomiting, and decreased appetite.

Signs typically appear within minutes of chewing and include pawing at the mouth, foamy drooling, head-shaking, vomiting (sometimes with plant bits), and decreased appetite. In rare cases the tongue or muzzle may visibly swell; if you notice swelling or any change in breathing, treat it as an emergency.

Wipe any plant material from your dog's mouth with a damp cloth and offer cool water; a small amount of milk or yogurt can help ease the burning by binding the oxalate crystals. Then call ASPCA Animal Poison Control at (888) 426-4435 or the Pet Poison Helpline at (855) 764-7661. Do not induce vomiting unless a veterinarian explicitly tells you to.

With supportive care, most dogs recover within 24–48 hours. Call your vet immediately if drooling has not stopped within an hour, the dog refuses to eat or drink, the tongue or muzzle is visibly swollen, or breathing changes at any point.