I wouldn't recommend this bed for a cat that large. The measurements given are the OUTSIDE measurements and the sides are pretty thick. Can't give you the inner measurements since I'm not at home right now, but I'd look for something bigger if I had a 20-lb. cat.
answered 1 month, 1 week ago
0out of 0found this answer helpful.
I have this bed, the inside dimensions are approximately 13x11. My cat is 18" and 10 pounds and she loves it.
answered 2 years, 1 month ago
8out of 8found this answer helpful.