In the natural world, blending into the background is an essential survival skill.
It would certainly take a sharp-eyed hunter to spot where this animal is hiding.
On closer inspection, however, the bark and branches of this oak tree take on the shape of a deer's head, realistic enough almost to have been carved by a sculptor.
The phenomenon was spotted by John Jones, 65, on a golf course near Burntwood in Staffordshire. The retired engineer-and amateur photographer said: 'I couldn't believe my eyes. Everyone agreed it was quite incredible and I thought it was definitely worth a picture.
'But I am keeping its exact location a secret - just in case it gets damaged.'
Last week, the Mail revealed how firemen were called to rescue an iguana stuck up a tree, only to discover the vision was no more than a broken branch covered in algae.