A completely white grey pony sleeping. Seems a touch bony beneath the thick coat, might be old.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/68387408@N00">Erich Ferdinand</a> from germany
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/68387408@N00/116461044/">Sleeping Pony</a>