This story has been plastered everywhere, but since it fits into the "strange things dogs have been trained to sniff out" theme of the past few posts, I thought I should include it.

Belle, a beagle, was trained to sniff her diabetic human-dad's breathe to determine if his blood sugar levels were too low or too high. If so, she would warn him. Recently, when he didn't heed her warning and became unconscious, she did what any well-trained dog would do in an emergency--dial 991. 

Photo: By Julie Fletcher -- Orlando Sentinel