The term WATCHDOG'S WARNING is composed of six words, each with a different number of letters. The first word, GROWL, is five letters long and is defined as a low, guttural sound made by an animal, usually a dog, to express displeasure or aggression. The second word, SNARL, is also five letters long and is defined as a loud, harsh sound made by an animal, usually a dog, to express anger or hostility. The third word, GRR, is three letters long and is defined as a sound made by an animal, usually a dog, to express anger or annoyance. The fourth word, RRR, is also three letters long and is defined as a sound made by an animal, usually a dog, to express fear or anxiety. The fifth word, GNAR, is four letters long and is defined as a sound made by an animal, usually a dog, to express pain or distress. The sixth word, GRRR, is also four letters long and is defined as a sound made by an animal, usually a dog, to express anger or hostility. Taken together, these words form the phrase WATCHDOG'S WARNING, which is used to describe the warning sound made by a watchdog to alert its owner of potential danger.