Classic dialog

I'm reading the new Get Fuzzy collection, "Say Cheesy." In one strip, Satchel the dog comes into the room where Rob the owner is reading.

Satchel: What's in the paper today?
Rob: Well, I'm just reading the real estate section.
Satchel: For what?
Rob: I'm checking out the houses.
Satchel: Houses as in different houses?
Rob: Is the Pope Catholic?
Satchel: Ha ha! Does a bear . . . um . . . wait, I have no idea what a Pope is . . .