Quote from Frasier in The Guilt Trippers
Frasier: Oh, by the way, Dad. I got you a little something to keep you company while I'm away. Martin: Oh, no way. The robot dog. Thanks, son. Frasier: Sure. Martin: Oh, good, you got the girl one so it won't fight with Eddie. Frasier: Dad, it's not a girl. That's where the batteries go.