Is your pet a stressed out, anal A-type personality or is he a cool as a cucumber, laid-back, no care in the world type personality? Well, a Japanese company has developed a patch to determine your pet’s stress level by detecting excessive sweat secretion. The patch is applied to the pet’s paw and changes color depending on how much sweat the pet is excreting. The patches will be on the market in Japan later this year. This dog pictured here doesn’t look too stressed out — in fact, he looks like he just ate some “special brownies”.