<div dir="ltr">I remember hearing somewhere that the only three things that are assur to own are chometz b'pesach, avodah zarah, and dishonest weights.<br><br>Is this true?<br><br>The two counterexamples that people have mentioned are<br>
a) sefarim chitzonim, and<br>b) dangerous dogs.<br><br>As for a), I'm not sure that there's an issur of owning at all. We say that certain things should be burned (e.g. sefer torah shekasvo min, IIANM), but I don't recall seeing the word issur used in that context. (Then again, I haven't learned much of the topic...) I don't think dangerous dogs are a counterexample either, since the dog itself is not actually assur b'etzem, it's just that you're not allowed to create a dangerous situation. Owning a dangerous dog is no different from owning a house with a usable roof and no fence.<br>
<br>KT,<br>Michael<br></div>