well , do n't stand there , man , '' he said to the sergeant . he 'd test her limits on that another time . when the sun drops , it 's going to get very dark and very cold . he howled in pain , and in the next moment grabbed her by the back of the head , pushed the canister over her nose , and squeezed . the horse was making me laugh . he gave the dog 's head a quick scratch , the turned and started back down the shadowy dirt road . 