Some called him Cujo, others knew him as The Dog. But in this Utah town, all knew him as a killer

WEST VALLEY CITY, Utah - Some took to calling him Cujo. Others dubbed him Zorro. At least one named him Jack. For most around these parts, however, he was simply known as The Dog.

His tan and dark fur coat was, for a German shepherd mix who hadn't had an owner in two or three years, remarkably well groomed. Early on, his presence was barely noted. He ran amidst other dogs - including a small mob of yipping Chihuahuas - that roamed the streets and fields without leashes or cares.

But as summer peaked, something changed in The Dog.

Few were suspicious of him at first, when some chickens were found dead in the neighborhood. Could've been foxes or even an overly aggressive badger, local animal control thought. It wouldn't be the first time chickens fell prey to something wild, residents said.

Then Chandler Caldwell's goat, Buddy, was found dead on the farm at Roots Charter High