I’m not super familiar with Mink but I’ve seen a small short tail weasel kill and drag off a bunny during the day right in front of me and my kids and a mink is much bigger. I also know they will kill anything they think they can eat but in the end don’t always manage to drag them off. Was it close to the back of the neck? What did the wound look like? A mink will leave closely spaced pairs of canine teeth marks usually by the neck or skull. They are apparently notorious for leaving what they kill behind. People liken their tracks to a kittens. Was there any scent ever? I hope this helps!