A horse's mane primarily serves to protect the neck from insects and the elements. The thick hair acts as a natural barrier against biting flies and provides some protection against rain. Additionally, the mane can offer some insulation to the neck during cold weather. In wild horses, the mane is also thought to serve a role in social interactions and mating displays. Grooming and maintaining a horse's mane is an important part of equine care, both for practical reasons and to enhance the horse's appearance.