Tadpole in stage of metamorphosis of <a href="https://en.wikipedia.org/wiki/Pelobates_cultripes" class="extiw" title="en:Pelobates cultripes">Western Spadefoot (<i>Pelobates cultripes</i>)</a> in <a href="https://en.wikipedia.org/wiki/Trabancos" class="extiw" title="en:Trabancos">river Trabancos</a>, near <a href="https://en.wikipedia.org/wiki/Pollos" class="extiw" title="en:Pollos">Pollos</a> (<a href="https://en.wikipedia.org/wiki/Province_of_Valladolid" class="extiw" title="en:Province of Valladolid">Valladolid</a>, <a href="https://en.wikipedia.org/wiki/Spain" class="extiw" title="en:Spain">Spain</a>)
<a href="//commons.wikimedia.org/wiki/User:David_Perez" title="User:David Perez">David Perez</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>