Independent presidential candidate Robert F. Kennedy Jr. is refuting a report in Vanity Fair that he sent a photo of himself to friends posing with the barbecued carcass of what experts identified as a dog. On Fox News Tuesday, Kennedy, a former environmental attorney known for his conspiracy theories about vaccines, vehemently denied the animal was a dog. He insists it was a goat. Want more breaking political news? Click for the latest headlines at Raw Story. “This Vanity Fair story, I want to give you an opportunity to address it, that has a picture of you holding up what looks like a carcas…