Biting flies are insects known for their painful bites, which they use to feed on the blood of animals and humans. Common types include horse flies, deer flies, and stable flies. These flies are typically found in warm, humid environments and are most active during the day. Their bites can cause irritation, allergic reactions, and in some cases, transmit diseases. Biting flies have specialized mouthparts that allow them to pierce the skin and access blood vessels. They are attracted to carbon dioxide, heat, and body odors, making humans and animals prime targets. Effective control measures include using insect repellents and wearing protective clothing.