> How do you distinguish a heart of a human and the heart of a rat with at that distance and that noise level? A rat has a resting heart rate above 200bpm. The

> How do you distinguish a heart of a human and the heart of a rat with at that distance and that noise level? A rat has a resting heart rate above 200bpm. The only thing similar to a human heart beat would be of a dog, pig, goat, or sheep.