"Some dogs don’t react well to being woken up suddenly," explains Dr. MacMillan. "They might startle easily due to their temperament or because they have a sensory issue like deafness or blindness. This could lead to a groggy dog snapping at you in the night when you accidentally roll into them the wrong way."

Jerald Kirkwood was sound asleep before he was awoken around 4 am by a loud noise and excruciating pain in his leg. He had been shot. The, um, alleged shooter's name is Oreo and he is a one-year-old pit bull.

Every year, thousands of people in the U.S. are injured in accidental shootings. In rare cases, the trigger is pulled by a paw from man’s best friend rather than a human finger.