Does Colorado have grizzlies? If they just have black bears it is rare for one to attack a human. Usually it’s a male that goes predatory, and there will be multiple attacks. Typically not just out of the blue for no reason.
The bear could’ve been looking for food and instead it was called an attack, if the idiot had food in his tent then the bear would’ve gone for that. We had a bear attack our snowmobile seat, looking for the potato chips from an empty potato chip wrapper. Their sense of smell is amazing. And apparently their memory. He did it again the next year and the snowmobile was completely clean. That’s when we built a shed for the snowmobiles.
I don’t know if Colorado has Grizz- i think so- but not sure- Black bears can turn predatory too when food sources aren’t good- every now and again there will be starvign bears that get too close to folks and have to be relocated- but yeah, attacks are pretty rare-
Colorado does not have grizzlies. That said bears are just coming out of hibernation and can be quite aggressive for food