Riddles

While doing animal sounds with Oma and Zaide over FaceTime, Gabe had the following exchange:

Mom: What does a lion say?
Gabriel: ROAR-R-R-R-R-R!
M: What does a baby lion say?
G: (quietly) Roar!
M: What does a chicken say?
G: CLUCK CLUCK!
M: What does a baby chicken say?
G: (quietly) Cluck cluck.
M: What does a watermelon say?
G: Juicy, juicy!
M: What does a hamburger say?
G: Ketchup, ketchup!