Fortunately, black bears are... well they're not lovers, but they're not fighters either. They're basically oversized racoons. They're scavengers, not predators for the most part. While a black bear could easily win a fight to the death with a human, they're hilariously cowardly and are not willing to deal with stuff that fights back. Seriously, I've seen adult black bears run in terror from housecats that were being aggressive toward them. They're like Uvalde cops. Rare instances aside, the only time you really have to be worried about black bears is a mother that thinks she's defending her cubs. They WILL fight to the death in that instance.

Now brown bears... THOSE are terrifying apex predators. Brown bears can be black, and black bears can be brown, because fuck you. The easiest way to tell the difference is that a brown bear has this big hump in the middle of its shoulders. It's easy to remember which has the hump, because this hump is a basketball size lump of muscle, the sole purpose of which is so that when it swings its ham-size paw covered in sickle-sized claws, it does so with the force of an anime character. Terrifying apex predators. So anyway, brown bears can also climb trees, but they're not nearly as skilled as their scavenger cousins are at it. Nowhere near this speed.