Is Mamey Apple toxic to cats?

Mildly. The ASPCA lists mamey apple as mildly toxic to cats — a chewing cat typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. Mammea americana is not listed individually by ASPCA. The seeds and bark contain mammein and other coumarins (furanochromones) that are insecticidal and have demonstrated toxicity in animal models — historically used as fish poison and insecticide in the Caribbean. The fruit flesh is consumed safely by humans, but the seeds and bark are considered toxic and must be kept away from pets and children. Classified mildly-toxic as a precaution given these documented bioactive compounds.

Mammea americana is not listed individually by ASPCA. The seeds and bark contain mammein and other coumarins (furanochromones) that are insecticidal and have demonstrated toxicity in animal models — historically used as fish poison and insecticide in the Caribbean. The fruit flesh is consumed safely by humans, but the seeds and bark are considered toxic and must be kept away from pets and children. Classified mildly-toxic as a precaution given these documented bioactive compounds. Signs usually appear soon after chewing rather than hours later — watch for drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy after your cat has had access to mamey apple.

Stay calm. Remove any plant from your cat's mouth and take the plant away. Note how much was eaten and when, and do not induce vomiting unless told to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice; a leaf or photo helps the vet treat it correctly.

The ASPCA classification Growli uses applies to both cats and dogs: Mamey Apple is mildly toxic to dogs as well. See the full mamey apple pet-safety guide for both species.

For a similar look without the risk, see the best cats-safe plants list — every plant there is ASPCA non-toxic to cats and dogs.