The term CANINE COMMENTS can be broken down into two crossword solutions: ARFS (4 letters). ARFS stands for 'audible reactions from a dog, ' which are the vocalizations that a dog makes in response to its environment. These vocalizations can range from barking, whining, and howling to growling and whimpering. They are often used by owners to gauge their pet's emotional state and can provide insight into how the animal is feeling.