It seems that it is not fake, but probably somebody taught how to paint that image. They are amazing animals and are said to have incredible memories, and can laugh. This documentary ( actually a poetic narrative rather than a documentary) may be interesting to watch, too.
http://www.imdb.com/title/tt0493393/
A viewer has described it as a picture poem and it really is. It is not objective at all, and I think it appeals to a certain aesthetic sense, which is a little fake for me, but there is a certain feeling of harmony in the movements of animals and human beings and that's really beautiful.