Media Matters for America tracks Rush Limbaugh's learning curve:

LIMBAUGH: Even this latest picture of a dog and a nude Iraqi -- you seen that one? A couple of Americans are holding -- it looks like German Shepherd, some kind of vicious big dogs, the dogs are barking, bow wow arf arf arf, this big dog -- you know and the Iraqi prisoner is cowering there in fear, he's all nude. And the picture caption "Dog attacks Iraqi." No, the dog isn't attacking anyone, the dog's on a leash. The dog is scaring an Iraqi prisoner. [gasp] "No! We're scaring them, too? Is that allowed in the Geneva Convention?! We're scaring then with dogs?" Yes, my friends we are. The dog didn't attack anybody. The dog's not attacking anybody. The dog's on a leash. Both of them are. I've seen the pictures. ...

[... about 35 minutes later ...]

LIMBAUGH: Apparently, ladies and gentleman, I need to offer a modification. Apparently, the pictures that are, the picture going around of the uh, the nude Iraqi picture cowering in fear of a couple of dogs. The caption of that picture that I've seen going around, uh, intimates that the dog was on the verge of attacking this guy, and he was very scared and so forth. In the picture that I saw the dogs were leashed and the correct caption would be "Nude Iraqi picture scared of dog but not attack [sic]." Apparently -- there's not a picture of it -- but apparently uh, well, there's another picture later where the nude Iraqi prisoner no longer cowering, um, in the corner against his cell, he's writhing on the floor with a pool of blood. Apparently, the dog did bite his leg, but there's no picture of that. I have just been, uh, informed of this. So I wanted to, uh, pass that on to make sure that the pass that on to make sure that the facts are out there. There's no picture of that, but apparently that's what uh, what happened. Sorry for the error. ...