Well, no one's telling you to "give it away" either, but do think about what you're going to say when a prospective buyer asks what lived (or died) in it, & why you're selling it. Maybe something like "I don't know- I bought it for my pet but it turns out it doesn't fit the space I have." or something plausible along those lines. If you tell them everything we've discussed here, you'll have it for a long time. Everyone is responsible for doing their own "due diligence".