Equinophobia
Equinophobia or hippophobia is a psychological fear of horses; contrasting with equinophilia, which is the love/fondness of horses. Equinophobia is derived from Ancient Greek φόβος (phóbos), meaning "fear" and the Latin word equus, meaning "horse". The term hippophobia is also derived from the same Ancient Greek word phóbos with the prefix derived from the Ancient Greek word for horse, ἵππος (híppos). Sufferers of equinophobia may also fear other hoofed animals such as donkeys and mules.
An example of the phobia can be found in Freud's psychoanalytic study of Little Hans.