Why are there no scratching posts with a tree bark structure?

Wouldn't it be possible that cats would find such a structure particularly appealing, as it would mimic the texture of real tree bark, which corresponds to their natural outdoor behavior? In the wild, cats scratch trees to sharpen their claws and mark their territory, so a tree bark texture might be more motivating for cats….

Tree disease, tree bark, fungi, beetles… from the tree and tree stump?

I was horrified to discover something very strange on the tree stump. It looked like black powder/dust was oozing out of the hole. I rinsed it off. It was like black smoke. 😳 And several holes in the trunk. What is this? Do I need to do something? What's happening? Is it harmful? Is it…