Really, lets see you do it then. You go catch a mink, "train" it to run around in a muddy ditch chasing anything it sees, then get it to put what it catches in a box. Heck, I challenge you to do that with ANY non ferret!
When you're done, make a video and show us what you've done. I'd bet a fair sum of money you couldn't even get a mink to let you hold it bare handed, and that's the easy part.
Talks cheep buddy, let's see what you can do!
Oh, and when you're done with that, lets see you train a mink to go in a chicken coop, ignore the squaking chickens, kill a rat, then drag it