Common Tree Frog (<i><a href="https://en.wikipedia.org/wiki/Polypedates_leucomystax" class="extiw" title="en:Polypedates leucomystax">Polypedates leucomystax</a></i>) at Zoological Garden of  Stuttgart (Germany).  The rightmost frog has a <a href="https://en.wikipedia.org/wiki/congener" class="extiw" title="en:congener">congener</a> in his mouth, cannibalism is common in this species.
<a href="//commons.wikimedia.org/wiki/User:Holleday" title="User:Holleday">Holger Krisp</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>