Is this perhaps the most photogenic horse in the world?

It’s not a real horse, but a digital painting. Please see e.g. the DHgate listing of the DIY diamond painting square diamond brown horse.

Below is one early version of the artwork.

Digital Pastels Painting.- GMX PhotoPainter 2.6.

Bob Smerecki (Flickr), 2013

Note that there are many variations of this horse picture.