Here's what the others thought the B that Dog had meant:
Sheep: Baby bottle
Sh-Sh-Shark- PBS activity: Fish-SH-SH-ing
Dog Wants to Play Ball- PBS activity: B-Charades
Sheep: (to Dog) Mommy will make you a nice baby bottle.
Duck: Why didn't you tell me you were a shark?
Shark: I didn't think you'd want to be my friend if you knew I was a shark. No one wants to be friends with a shark.
Duck: Why not? I don't care if you're a shark or a s-hark or a purple poka dotted monkey on a bicycle.
Sheep: What is a shark doing in your house?
Frog: That's what I'd like to know Sheep. Who would bring a shark in here?
Duck: Hey guys, I see you've met my new friend.
Sh-Sh-Shark- Build-a-Word: SHOE
Dog Wants to Play Ball- Build-a-Word: BALL