Hmm... my first instinct was to say NO, but after thinking about it for a second, I really have no idea if he is or not. He could very well be, or at least, the human Barack Obama could've been replaced at some point in the not-too-distant past and I would never know about it. I have no way to empirically verify or disprove this claim one way or another (at least, none that wouldn't involve me being killed by the Secret Service). I suppose an impartial panel of scientists could put the matter to rest by conducting an extensive battery of tests, but that hasn't happened for some reason (and even if it did, how could we know the scientists aren't shape-shifting reptilians in on the conspiracy as well?). I guess all this makes me an "I Don't Know". It's a strange universe we live in, and I think anything is possible (though some things are very, very, very unlikely).
I am certain that Obama does not eat dogs, though. As a Secret Muslim, Obama must view dogs as unclean creatures that are not fit to eat under most circumstances. Unless the individual we believe is Obama is actually a shape-shifting reptilian who replaced the Secret Muslim Obama, in which case I suppose all bets are off.