What is the purpose of keeping hair on the horse's ears?

• A. To protect from cold and filter dirt and bugs.
• B. To improve hearing range.
• C. To change ear color.
• D. To protect from cold but not filter dirt and bugs.

Answer: (D)

The main idea here is that ear hair mainly serves as a bit of insulation for the horse’s ears. In cold weather, that little layer helps keep the inner ear warmer and more comfortable. It isn’t something you rely on to filter out dirt or insects—those can still reach the ear, so other protective measures (like ear nets, fly sprays, or repellents) are used when bugs or dust are a concern. Ear hair does not affect hearing range, and it doesn’t change ear color, so those options don’t fit.