Horse loving viewers of HBO’s latest original series, Luck, were left reeling when a fictional horse was put down in the first episode of the show and were distraught to discover two real life race horses died during filming, and now RadarOnline.com has exclusively learned that there may have been a third four-legged victim on set.

“There has been at least two confirmed deaths of horses on the set, and there may have been a third death that it is not yet substantiated,” Kathy Guillermo

The shocking news that Dr. Conrad Murray's defense team tested the drug Propofol on Beagle dogs to help with his case in the Michael Jackson death trial has outraged PETA so much that they're calling for a federal investigation, saying it would have caused "enormous suffering in the animals."

As RadarOnline.com exclusively reported, Dr. Murray's defense team commissioned a study testing the affects of the powerful anesthetic on Beagle dogs, to bolster their claim that Michael Jackson orally overdosed on the drug.

"I cannot imagine any use for this information at all," PETA's Vice President of Laboratory Kathy Guillermo exclusively told RadarOnline.com. "These tests cause enormous suffering in animals."