Some wild animals can eat conkers (horse chestnut seeds), even though they’re mildly poisonous to humans and many pets.

Quick Scoop: What animal eats conkers?

  • Deer – Several wildlife observers note that deer will happily eat conkers with no obvious ill effects, even though the nuts are toxic to many other animals.
  • Squirrels – Squirrels are often seen peeling or biting into conkers under horse chestnut trees; they may eat some of the inside or cache them as part of their winter food strategy.
  • Others that do not safely eat them
    • Dogs: conkers contain the toxin aesculin and can upset a dog’s stomach, cause poisoning, or even gut blockage if swallowed whole.
* Livestock (horses, cattle, sheep, chickens): can be poisoned by conkers and even other parts of the horse chestnut tree.

* Humans: horse chestnuts/conkers are not the same as edible sweet chestnuts and should not be eaten.

In short, if you’re wondering “what animal eats conkers?” the main regulars are deer and squirrels , while most pets and farm animals should be kept well away. 🐿️🦌

TL;DR: Deer and squirrels are the main animals that eat conkers; they’re mildly poisonous to humans, dogs, and many other animals, so don’t treat them as food.

Information gathered from public forums or data available on the internet and portrayed here.