Random question for you all - how many of these horses that are smart enough to fake a limp are Arabs or part-Arabs? I ask because my gelding is INCREDIBLY smart, he's not a horse at all he's a human in a horse's body right down to playing jokes on me because he is comfortable enough with me to be himself, yet being a total "normal" poneh for anyone else. I have never met a horse as clever as my lad. And yes, he fakes lameness on occasion! Right now he is genuinely a bit off after being kicked hard in the shoulder [he brought that on himself, no sympathy from me - he is still off work until he's a-ok but he's not getting any sympathy] but he will, every now and then, come out of the pasture 3-legged lame, invariably in a front leg, so I'll bring him up to the yards, tie him up, look him over to see if I can find anything, pop him in the round pen so I can watch him... and miraculously he comes good within the first two strides. If not then, it's back in the pasture where he bolts around like an idiot with no sign of lameness whatsoever.
He's just smart enough to have learned that limping means he doesn't have to work. And he's lazy enough that he'll try it on every now and then.