What percent of dogs and cats do you think are overweight or obese? The numbers are staggering. Dr. Ernie Ward, a world ...

He dodged around bushes, giving them a cursory sniff as he went. Mattie stayed close, tethered to her dog by the leash but keeping it loose between the two of them. Brody remained close by, standing ...

There's also another reason experts caution against them: their tracking limitations.