Porcupines go crazy for salt:<p><a href="http:&#x2F;&#x2F;blog.nature.org&#x2F;science&#x2F;2015&#x2F;03&#x2F;30&#x2F;believe-porcupines-eat-bigfoot-bones-outhouses-myths&#x2F;" rel="nofollow">http:&#x2F;&#x2F;blog.nature.org&#x2F;science&#x2F;2015&#x2F;03&#x2F;30&#x2F;believe-porcupines...</a><p>I guess there&#x27;s any number of reasons animals chew on things.