Three:
"You know a dog is well-liked when you see it in a crown," said Roger.
"Nah, look at the crown," said Brian. "It's old and tin and beaten. It must be some kind of joke."
"No collar, no identification," said Roger. "What should we call him?"
"I don't know," said Brian. "What's your name, abandoned dog?"
"It is Spot," said the dog. "I am... zee King of zee World."
"—wow, you talk," said Roger.
"Where did you learn to talk?" said Brian.
"I learn in zee big tent," said Spot.
"A circus dog," said Roger. "I'll bet he's a lost circus dog."
"Oui," said Spot. "In zee big tent, in front of zee crowd, no one can take their eyes off me. I fly through zee air. I jump through zee fire. I make zee clown chase me and he empty zee bucket onto zee ringmaster. Then I wag zee tail and zee people laugh. Then I kiss Mademoiselle Princess and — in zee poof of smoke — we turn into zee King and Queen of zee World."
"I bet there will be a big reward for your return," said Brian. "Abandoned dog, was the one-legged man with your circus? Do you remember the name of the circus you came from?"
"Ah... oui... zee circus I come from... she burn up... no survivors..."
"A burned up circus?" said Brian. "No circus burned. We would have heard about something like that."
"Ah... oui... zee circus I come from... she die of zee plague... no survivors..."
"Plague? Are you lying to me?" said Brian. "Stop lying, evil dog. Tell me where you're from."
"Ah... oui... zee circus I come from... I trade her in for zee magic beans..."
"I don't think it's any use," said Roger. "Either he doesn't know, or he doesn't want to go back."
"I think he knows," said Brian. "But that won't stop me. I have all summer to find out which circus he comes from."
"Remind me what you mean by zee thing you call 'circus,'" said Spot.