Wyoming has a dearth of herps and interesting inverts. Most of the herps are small, and only two are venomous. The midget faded rattlesnake has an extremely small range in the south central part of the state and is actually one of the most venomous snakes in the U.S., but it doesn't inject much venom so is generally considered dangerous primarily toward folks who have an underlying condition. The northern scorpion, black widow and hobo spider are the only inverts that can be dangerous to humans.
Tiger salamanders are the only salamanders that live in Wyoming. I've always liked amphibians, but Wyoming got the short end of the stick when it comes to them.
Very short legs sounds like a lungless or worm salamander of some kind. If I remember right, California has the most number of salamander species of any state in the lower 48. Of course, not all live in the same place. It's sometimes referred to as the "Land of the Salamanders" by herp hobbyists, especially those who focus on salamanders. I only know this because I've been looking into some of the more exotic salamanders and frogs for a few of my tanks. And snakes, too. My wife and I had a deal. Nothing venomous until the kids grew up, and we're empty nesters, so guess what?

I won't be sharing any of that on the forum, though.
WYite