<div dir="ltr">Can some rabbits, or some creatures the rabbit interacts with, see in ultraviolet? If so, this marking would be visible to them. The utility depends on who exactly sees it: warning off predators, welcoming fellow rabbits to breed with (perhaps denoting it's this specific breed of rabbit so as to encourage breeding with that rabbit instead of others), and so on.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Mar 8, 2021 at 2:25 PM William Flynn Wallace via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:"comic sans ms",sans-serif;font-size:large;color:rgb(0,0,0)">OK, you evolutionary theorists, come up with an explanation for the rabbit:</div><div class="gmail_default" style="font-family:"comic sans ms",sans-serif;font-size:large;color:rgb(0,0,0)"><a href="https://www.nature.com/immersive/d41586-021-00485-2/index.html" target="_blank">https://www.nature.com/immersive/d41586-021-00485-2/index.html</a>?<br></div><div class="gmail_default" style="font-family:"comic sans ms",sans-serif;font-size:large;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:"comic sans ms",sans-serif;font-size:large;color:rgb(0,0,0)">bill w</div></div>
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