That would make them the second animal known to do this. (<a href="http:&#x2F;&#x2F;news.nationalgeographic.com&#x2F;news&#x2F;2015&#x2F;02&#x2F;150212-dogs-human-emotion-happy-angry-animals-science&#x2F;" rel="nofollow">http:&#x2F;&#x2F;news.nationalgeographic.com&#x2F;news&#x2F;2015&#x2F;02&#x2F;150212-dogs-...</a>)<p>Probably not a coincidence that they&#x27;re also one of the relatively few domesticated animals (<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;List_of_domesticated_animals" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;List_of_domesticated_animals</a>).