Because he couldn't bark
Nervous glance at dog Dog: Frank, we've been over this. I like you as a friend
Someone who stays up all night wondering if there is a dog.
Spruce Wayne
There's nothing else to climb in the jungle.
An animal that barks at low flying aircraft!
Student:I don't know. Teacher: Bark, my child, bark. Student: Bow, wow, wow.
None. They can't climb the ladder.