I remember when I was a kid we had two basset hounds, mother and son. The son wasn't too bright. They would both get a bone, the mother would eat hers quickly and the son would doddle. She would then rush at the gate, barking furiously (at no one). The son would run up and start barking too. The mum would then double back and get his bone.
Fair enough, she wasn't using sonar but it was "competitive interference among individuals of the same species."