Can a Horsefly Bite Hurt Dog?

Horseflies have sharp mouthparts adapted for cutting, which they use to create shallow, bleeding wounds to access blood as part of their diet of primarily meat and nectar.

These bites can hurt quite a bit for humans and they can certainly hurt for dogs as well.

Horsefly bites can become especially serious in the presence of an allergic reaction or an infection caused by bacteria on the mouthparts of the flies.