“After years of having a dog, you know him. You know the meaning of his snuffs and grunts and barks. Every twitch of the ears is a question or statement, every wag of the tail is an exclamation.”
Very true. My dog has a bark for water, a different bark for I want to come in, a snuffle and snort for I want to eat, a dance for I want to go out and intense STARE, and then the regular 'standing guard' bark.