Horses See Spirits

I gave a talk and did a book signing on Saturday at the Largo-Kettering Library in Maryland and it was well-received. There were a lot of folks who had their own experiences and they shared them with me. One gentleman who had moved from the African Continent to the U.S. told me that in his homeland it is widely known that horses can see Earth-bound ghosts and spirits (who have crossed).
I firmly believe that horses, like dogs and cats have that ability. Dogs, cats and horses, moreso than any other domesticated animal hear at higher decibel ranges (that digital recorders pick up, but humans don't hear at that level). Each of those types of animal also have the intelligence of a 4-5 year old human child (read Dr. Stanley Coren's "The Intelligence of Dogs" (cats and horses). Further, they have different cones and rods in their eyes than humans, that enable them to better sense motion.
The gentlemen proceeded to tell me more about the African belief. He said that it's known that when a horse sees a ghost or spirit, you can look directly in their eyes and see the ghost that they are looking at. Fascinating! I was so glad he shared that story with me.