A young one, they get very hairy as they grow!
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/105673978@N08">Nikk</a> from Peterborough, UK
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/nikkvalentine/30577781491/">Buff Ermine Caterpillar - Spilosoma lutea</a>