Robert F. Kennedy Jr. was accused of “reveling in animal cruelty” this week after a damning photo captured the third-party presidential candidate posing with the barbecued remains of a dog, RadarOnline.com can report. In a shocking development to come weeks after it was revealed that Kennedy, 70, was once diagnosed with a dead tapeworm inside his brain, it was also revealed that the environmental lawyer-turned-wannabe president once posed alongside the burnt remains of a dog 14 years ago. Even more startling was the realization that Kennedy seemingly shared the disturbing photo with a friend w…