Quote from Haley in Aunt Mommy
Haley: Mom heard us say we were bored. Phil: Suckers. Alex: She heard us from outside. Haley: She has super good hearing, like a seeing eye dog. They have overdeveloped hearing to make up for the fact that-- Wait, the dogs aren't blind. Wait. Are they? No, that wouldn't make sense. Alex: You're right. If I wait long enough, she can get there by herself.