“It’s a chicken,” Paul replies, as he returns his attention to Cash.  

“Come here, Bubba!” the male voice says. “Come here, Bubba!”

Witness after witness — many of them longtime friends or family of the Murdaughs — testified that the voice belonged to Alex. 

He had repeatedly told law enforcement that he had not seen his wife or son prior to waking from a post-dinner nap and driving to his mother’s house, but this video — and the audio of Alex shouting Bubba’s name — placed him firmly at the scene just minutes before Maggie and Paul locked their phones for the very last time. 

Meadors, the prosecutor, told the jury on Thursday that when his own family had seen the kennel footage, they told him, “Isn’t it something that your best witness in here are the dogs?”

“You know some people say they’ve got a sixth sense? You think Bubba knew?” Meadors asked. “He got Alex to say something: ‘BUBBA!’”

“Thank you, Bubba,” Meadors said, before noting that the dog is now living with the Murdaugh family housekeeper, who was herself another key witness in the trial.

Source: https://www.buzzfeed.com/davidmack/alex-murdaugh-dog-little-detective-paul