I did a lot of research before deciding on these shelves. My two kittens are 6 and 7.5 pounds and these shelves have enough space for them to lie down and sit. The only reason I took off a star was because (as other reviewers have pointed out) the wall anchors are TERRIBLE. Both of mine broke. pain in the buttocks. I had to run to the store to shop. Plus, they were pretty easy to install. They seem strong enough for kittens. PS: As you can see from my photos, I covered the shelves with drawer liners to give some support to keep the cats from sliding off! Also, the marble is very cute (:
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