[QUOTE=Caol Ila;8086286]
I would agree that elephants are smarter than horses and require more space and resources. But they have a long history of working with people in Southeast Asia.
This thread made me think of the movie ‘Blackfish’ and a book, recently published, by John Hargrove, who is an ex-SeaWorld trainer. It breaks your heart. Orcas are not an animal we can keep in captivity, as we cannot (and SeaWorld doesn’t even try) provide them with what they need.
At one point, Hargrove describes how they train the whales – I thought, same behaviourist principles you use to train a horse, but really not the same at all. If I mis-time a cue with my horse or don’t reward a behavior as I should have, my horse does not get pissed off and attack me. She might not do what I want (though she is a good girl and often works it out anyway from my muddled signals) and we try again. BFD. An orca who thinks you have been unfair or is fed up might grab you and drag you under water.
From Hargrove, you get the sense that there is almost like a cult of behaviorism, underpinned by a lot of safety procedures because the trainers know the whales can get aggressive. There is this sense, this confidence, that if you condition X, the animal will do Y, except when it doesn’t, often with disastrous consequences when the safety procedures fail. Those too are reliant on the animals being conditioned to respond to certain signals, and angry orcas might choose not to. After all, they are apex predators who are probably smarter than we are, living in horrendously unnatural conditions.
I’ll stick to horses.[/QUOTE]
The biggest thing is I suppose that horses do not habitually hunt.
In a documentary about Orcas the narrator explained the scene of the whale attacking a penguin to what we do with out breakfast egg…sorry dude, I don’t chase it around the table before I eat it! 
but considering Orcas are carnivores, and not over grown dolphins (who would probably not shy away from a good seal either), I suppose the comparison should include a tiger or bear, except, they are much bigger, and probably a lot smarter, too!