Icky sticky slimey but, they're just so danged cute and definitely, catch and release. French Creek was notorious for the waterdog and I wouldn't hold one trying to get it unhooked, just cut the line as close to the mouth as possible. Grabbin hold of a cat, ain't nearly as gooey.
Sam congratulations to your buddy. Nothing like a dinner plate of walleye and venison. Pennsylvania Surf & Turf.