Can Rats Run Up Walls. Preventing rats from taking up residence in a location can save a great deal of money in the long run. The only surface they definitely can't climb is smooth glass.
Rats are animals that spawn in dark places in the overworld. Wild rats are considered voracious pests that seek to eat as much as possible. Rats are small creatures that spawn at night in the overworld, just like monsters.
Friction is a force that acts on an object when two surfaces are pushed together.
Rats can quickly become unwelcome guests in your home if they find the opportunity. Both can end up in the walls of a 3rd floor they run really fast to defy gravity. And can do extensive damage. You've only got to have a small gap in your sewer system and they then crawl up through the toilet.