As many of us know dogs can do some serious damage to humans. My brother was attacked by next door neighbors Mastiff. The dog show no aggressive behavior prior. Knocked him down from behind and took a small chunk out of his left shoulder. Needed stitches and medical attention. He was concerned about nerve damage in left arm / hand. Could have hurt his career as he is a commercial pilot and was out of work for some days afterwards. Fortunately it healed.

Dog bites and attacks on people are serious business.