To take your dog’s temperature, you’d get an ordinary digital thermometer and you would put a
little bit of water-based lubricant jelly on it, and
you would very carefully insert it into the rectum and put it to the side of the mucosal membrane, so you actually push it inside the rectum and push it against the side. Otherwise you’re just taking the temperature of the next stool they’re about to pass. So you would be putting it against there and, obviously, you would
label that thermometer up and keep it separate from any human use.