I normally don't encounter many snakes other than garter snakes. Any ideas what this is? It was in central MN. Whatever it is I hope it eats mice.

Probably hognose....

Hognose.

Spreadin Adder

Hognose

Probably a black cobra.

Don't confuse people with your colloquialisms lol.

Cobra gets my vote...someone's pet got loose...lol

Eastern hognose snake to be precise.

https://www.mnherps.com/species/heterodon_platirhinos

eastern hog nose

LOL Common hognose.
Love the comments.

Puff adder... aka eastern hognose.

That's a Toad Eater

Spreadin adder, puff adder, Texas cobra, hognose

Will hiss and spread it's head but will "play dead" if the bluff does not work

Diet is toads mostly

Harmless to humans

Used to know an old man that commercial fished the Missouri river for years. 30's to the 60's. Called them sand cobras. Was scared to death of them. Insisted they were poisonous. I found out one day when we were pole fishing. I grabbed the snake after telling him it was harmless and he backed up. When I picked it up he was almost in a panic. Even after I laid it down, rolled it over so he could see it roll over on it's back again he was still scared. I tossed it in the river and it came alive again and swam off. He insisted we go home, angry I hadn't killed it and worried it was going to "sneak up on us".