I heard it before opening which is a bad sign. I opened it carefully and found that the cave was divided into several parts. I sealed the packaging and initiated a return within 2 minutes of opening. Later that week I bought the same den at a local pet store. It was more expensive, but I didn't want to wait for what might turn out to be another broken piece. Well, turns out my big goldfish (which gets too big for most caves) won't even use it. Someone told me that if there's no back exit, the fish can't get in. Now I can't vouch for it as I'm sure some people could use it, but the fact remains, mine doesn't. For the large size (which is not that easy to find) I give her credit. How the product arrived is irrelevant for this rating, as it is not the product. The fact that none of my fish would use it downgraded it to 3 stars. Maybe the little frogs like it.
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