Yes, t's a foal's ... tail.
Isn't it a wonderful colour and a really interesting texture?
Did you know that UK Native Ponies, including those of the New Forest, have evolved a special layer of hair at the top of their tail that keeps rain away from their body?
Picture taken at the Beaulieu Road Pony Sales October 2006, there are more pictures of hte sales in my archive.my vfxy
White phone box.