Twice This Fireman Has Battled Cancer And Survived, Thanks To His Dog Sabrina [VIDEO]

Dogs really are a man's best friend. A fireman in Florida says his dog Sabrina saved his life twice and he wouldn't be alive today without her. What exactly did this little dog do?

I've heard similar stories where dogs have detected cancer before the person even knew they had it. Incredible, isn't it? What a gift.