Lice: We aren’t the only ones who can be affected by lice. Horses can get lice as well, especially ones which are stressed, malnourished, or in otherwise poor health. And even healthy horses can get lice if they live in close quarters with affected horses or through the shared use of brushes or equipment. The lice lay their eggs anywhere on the horse’s body, but the horse will often appear itchiest around the base of the tail, mane, and head. Lice in horses is more common in the winter and early spring when the horse’s hair coat is long.