This curious fellow is a face in a tree :D
Apparently the phenomenon of seeing faces or shapes in objects like clouds or trees is known as
pareidolia. Carl Sagan theorised that seeing faces like this is common because we're hard-wired to recognise them; but precisely because we have the ability to distinguish faces at a distance and in poor lighting, we end up seeing faces when they're not there. Hence we see faces
here and
here and
here... even though they're not there. Unsurprisingly, when faces are distinguished they're often given a religious slant, hence all the bizarre stories about jesus appearing in a bit of
marmite. Or a
chapati, depending on where you're from.
People who can't recognise faces correctly suffer from
prosopagnosia.