In one episode, some motorists and a highway patrolman stop to put a deer out of its misery after a car accident. Then they discover that the deer was pregnant, so they stick around to deliver the baby fawn.
In one episode, some kids call a friend (or are making prank phone calls), and accidentally call an old man who is having a heart attack. They proceed to stay on the phone with him so they can call the emergency phone service, as they lived in an area where they didn't have 911.
Any time a young child knows to dial 911 (either because s/he has been taught by parents or learned about it at school) and saves a life.