Start to pay careful attention to the words you use around your dog. You might even write down what you think your signal words are. Be specific about exactly what words you use. Do you say “Lie down” or “Down,” or both? After all, the words complete and pleat share the same sound, but they mean different things to us. How is your dog supposed to know if “Lie down” has the same meaning as “Down”? Would you, if it were two unfamiliar phrases in Swahili?