"Neigh" is the word that English speakers use for the sound that a horse makes.

Here's a list of some other animal noises:

• Cat: "Meow"
• Pig: "Oink"
• Bird: "Tweet"
• Duck: "Quack"
• Sheep: "Baa"
• Turkey: "Gobble"
• Rooster: "Cock-a-doodle-doo"