Hahaha, I've seen horses who like them, but I've never actually really given any of my horses toys, but I got a jolly ball (dog sized) for my lab golden retriever cross, cause she was forever chewing through and destroying everything else we tried, and she's had it for 4 years now, and absolutely loves it, and its surprisingly survived completely intact.
I bought one for my horses and they nosed it around for a bit and then never touched it again. My brother's black lab, on the other hand, loved it. She plays with that thing constantly. Oh well, at least something plays with it and it wasn't a waste of money. :)
Pretty much the same here. D didn't even notice it but my dog has chewed it to tiny tiney pieces lol.