Can horses eat avocado?
No – toxic. Horses should never eat avocado. ASPCA lists avocado as toxic to horses. The Merck Veterinary Manual reports heart muscle damage, mastitis and colic in horses that ate avocado fruit or leaves.
Good to know: According to CliniTox (University of Zurich), the toxins are found in the leaves, pit, skin and flesh.
Did your horse eat some?
Stay calm and call your vet or an emergency vet right away – never watch and wait (RSPCA). Tell them what your horse ate, how much and when.
- ASPCA Animal Poison Control: (888) 426-4435 (a fee may apply)
- Keep a leftover, the packaging or the plant.
Better choices, for example
Questions
My horse ate avocado. What should I do?
Stay calm and call your vet right away, even if your horse seems fine – never watch and wait (RSPCA). Tell them what your horse ate, how much and when.
Sources
- ASPCA Toxic and Non-Toxic Plants – Avocado (toxic to horses)
- Merck Veterinary Manual – Avocado (Persea spp) Toxicosis in Animals
- CliniTox (Universität Zürich) – Pflanzengifte: Persea americana (Avocado)
- Penn State Extension – Trick or Treat: Things to Think About when Giving Your Horse a Treat
- RSPCA – What to feed your horse
Last checked: October 2026