They're not that big here in Michigan, unlike the ones I've seen out in N.W. Kansas while pheasant hunting.
Had one charge out of a plumb thicket at me (Not charging me, it was flushed out by a fellow hunter on the other side of the thicket)
The thing was indeed the size of a big German Shepherd and when it saw me, it swerved and took off. Watching it cross the field, it must have run a quarter mile full speed before it stopped briefly and turned around to look at me. Then it took off again and just kept going.
Out in that part of the country, they stay as far away from man as they possibly can because they know they'll be shot on sight if the farmer has a rifle.
My baby sister moved here a couple of years ago from Colorado when she and her husband divorced. She and her two little dogs moved in with Mom to help take care of her.
One evening she called and told me that she and her little dogs were almost attacked by a pack of dogs while she was out walking hers on leashes. She managed to get back in the house before they got to them.
I asked her what they looked like and she said big, reddish gray, and all had bushy tails like a wolf. I told her those were coyotes. She had a hard time believing it because the coyotes she had in Colorado were tiny compared to these. She thought these were a pack of Shepards but thought it was odd that they all looked alike. LOL
She started carrying her Glock when she walked the dogs after dark.