A marathon runner must rely on her faithful canine companion following a deadly fall while back country training; a man finds himself trapped after his SUV rolls down a steep embankment.

One man's life hangs in the balance; An unlikely hero emerges.

Two farm dogs go beyond the call of duty to save a rancher from being trampled to death; a guide dog leads a blind man to safety while the world crashes down around them.

After a deadly attack in the mountains, one woman's only hope for survival is her two loyal canines; a Quebec woman comes face to face with a deadly snake.

A rescue dog is one woman's only hope; a stray cat's keen sense alerts a man to a potentially deadly disease.

Two great danes spring into action when an infant stumbles into an icy pool; a mother duck alerts the police when her ducklings become trapped in a storm drain.