This is River, a 7-year old greyhound singing to the HALO video game theme. Dogs are pack animals, and they like to participate in activities with their human family pack. When the music started playing, the dog joined in the only way he knows how … by howling. Not all dogs will howl to every sound. Some get turned on by flutes, others by a saxophone, and others will start howling in response to your howling at them. And some don’t respond at all to music of any kind. A lot of dogs will cut loose when they hear a siren from an ambulance or fire engine. They are obviously communicating something to the siren. This is an instinctual behavior, and the dog thinks it is communicating with its pack.
Greyhound Calling His Pack