A couple of neat things about this video: First, when you're viewing the action through your iPhone, you miss stuff. I almost completely missed the initial find and kill of the prey item. Which meant that I missed the significance of the shrew's circling back, revisiting the prey item, then backing up and "baying" at me. He was defending his kill from me! And when he circled back he was going back to eat it. He thought I wanted to eat it too.
Second, the reddish-black teeth are typical of shrews. Look kinda nasty, like betel-stained teeth...When you find these little ebony-chestnut teeth in an owl pellet or fox dropping, you know they've been eating shrews.
Hope you enjoy this bit of amateur inquiry from a few inches above our lawn on Halloween Day.