Some black flies inflict a painful and itchy bite that we'd rather not encounter, while others can transmit disease to pets ...

Black fly bites can be very uncomfortable for your dog. When these flies bite, they can cause a lot of itching, pain, and ...

and black flies. Bites vary by species and person, but they’re often raised, red bumps or welts. Some might even bleed. Blackfly bites also might swell. (Pictured here is a horse fly bite.) ...