Plus, the PetSafe Martingale Dog Collar is available in six eye-catching colors. Positive Amazon review: “Needed a martingale collar to work with a rough collie’s thick neck fur and slim face.

It also tracks dogs' physical activity and rest ... who has a six-year-old Border Collie. The collar has a 90 percent average accuracy rate of emotional recognition, according to Seoul National ...

wearing the illegal collar, roaming a beach near his home in Ogmore-by-Sea. They handed the collie over to the Dogs Trust charity, who traced the owner through a microchip. David Prosser ...