Viral videos include alligator rides at children's birthday parties; mini-exercise bikes for toddlers; a man proposes to his girlfriend with a fake police standoff; doctors discover a new organ in the human body; an amazing acne transformation.

A rare eating disorder leaves a woman unable to keep food down; a driver receives a shocking diagnosis after an accident; a patient beats the odds; a one-of-a-kind dog could save a girl's life; Dr. Travis has a special surprise for his mother.

Nursing home employee records seniors having sex; intoxicated substitute teacher; lawyer uses psychic skills to solve cold cases; online program to reverse diabetes; the show's crew member's devastating diagnosis; boy and dog share medical condition.