FOX: The desperate owner of a chimpanzee that went on a rampage in Stamford, Conn., pleaded with police over the phone to help her stop the animal from mauling her friend, telling them they had to "shoot him" when they arrived.

Police in Stamford released 911 tapes of Sandra Herold's frantic call to police Monday as her beloved 15-year-old, 200-pound chimp, Travis, was attacking 55-year-old Charla Nash.

The chimp can be heard grunting at times on the tape, as Herold cries, "He's killing my friend!"

The dispatcher says, "Who's killing your friend?"

Herold replies, "My chimpanzee! He ripped her apart! Shoot him, shoot him!"

Click here to listen to the 911 call.

After police arrive, one officer radios back: "There's a man down. He doesn't look good," he says, referring to the disfigured Nash. "We've got to get this guy out of here. He's got no face."

The chimp attacked Nash as Herold, 70, frantically stabbed her beloved pet with a butcher knife and pounded him with a shovel. Nash was in critical condition Tuesday.

She suffered "a tremendous loss of blood" from serious facial injuries, police said.

Herold said Tuesday night that Travis had nothing but love until the "freak accident."

"It's just been hell," she told MyFOXNY. "There's no way to explain it any different."

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