The 55-year-old man was found lying dead on the side of the road on the Navajo Nation, a pack of dogs mauling him relentlessly. Emergency workers chased them away, but the pack — their ribs sticking out — kept trying to circle back.

It was not determined whether the dogs or a seizure felled Larry Armstrong. But the case vividly underscored the problems the Navajo Nation — and many other tribal lands — have with stray, feral or just neglected and loose dogs.

On the vast Navajo Nation, wildlife and animal control manager Kevin Gleason estimates there are four to five dogs for each of the more than 89,000 households — or as many as 445,000 dogs, most of which roam unchecked, killing livestock and biting people with alarming regularity.