Cat shelves or cat walls? No matter what you call them they are the coolest diy cat idea I've ever seen. Cat climbing shelves are a great way to make something cool for you cats & save space in your home.
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AWESOME homemade cat scratcher tree, made from scrap wood and recycled stuff! And my favorite part is, this whole thing securely attaches to the wall, so they can roughhouse as much as they want. Now I just need a new cat.