AND they are super tough.. can really soak up the lead ..which is why, if you can, break both front shoulders with the first shot so they cant jump..

I shot my first one at about 100 yards with a 300Win mag.. hit him hard, he dropped, got back up and took off running across the rock slide.. hit him again and he dropped in the slide..

Have been on numerous hunts for these, where the first shot isn't perfect.. once the adrenaline gets going, it can be along day tracking them..