I ordered 2 of these - both of our lops love them. They are sturdy enough for our 5 and 6 pound lops to jump on top. They are fairly heavy and quite sturdy, but not heavy enough that your bunny can't happily flip it all over the place. One of our bunnies prefers playing with hers. The other prefers hiding out or hanging out on top surveying his kingdom. I would recommend and Overstock has the best price I found.
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