Chestnut (horse anatomy)

Common card · No. 227158

The chestnut is a keratinized growth found on the inner side of the leg above the knee on the front leg, and if present, below the hock on the hind leg in many equines. It is often referred to as the night eye. Chestnuts are rough and callous-like, and grow in layers. It is believed to be part of a vestigial toe of extinct equidae. Chestnuts vary in shape, size, and color. Some breed registries require photographs of them, among other individual characteristics, to help identify the individual. However, chestnuts appearance is subject to change because they grow and can be groomed for neatness.

Read on Wikipedia · Image Visenna9, CC BY-SA 4.0