I don’t know anything about this painting. I found it on the Instagrams, photo by justinclemons.
If we assume this picture was painted in Texas, and the cowboy is from 1892, given the outfit he’s wearing, especially the trademark red bandana, plus the length of the horse’s tail, we can determine this picture was painted in West Creek, Texas in July and from that we can determine the species of the cacti the horse is trying to avoid: Opuntia cowboyensis ssp. redtexbandanensis.
Good to know!