Years ago, when my third son was about 12, he kept trying to phone a friend whom he had just met recently. He would call, the phone would be picked up, but nobody answered back; all he could hear was a dog barking.
Turned out that the dog had taken to being annoyed by the ringing of the phone. This was before mobile phones, so the phone was on a table and picking up the receiver was how one answered. Doggie would jump up, knock the receiver off the cradle, and start barking.