Rex ran over to the dinosaur.
"I can help you," Rex said.
"Thanks!" the dinosaur said.
"My name is Sid."
Rex smiled. "I'm Rex."
Rex looked at Sid's tail.
The spike was stuck deep.
"Cool tail!" Rex said.
"How did it get stuck?"
"I was swinging it," Sid said.
"Why?" Rex asked.
Sid shrugged. "It's fun.
My tail can knock things over!"
"Cool," Rex said.
"I like to roar.
Want to hear?"
Sid nodded.
"ROAR!"
A branch shook and leaves fell.
"Wow!" Sid said.
"Can you help me now?"
"Yes!" Rex said.
He pulled on Sid's tail.
It was still stuck.
Rex pulled harder . . .
And harder . . .
Rex's claws slipped.
He fell backward.
Bam!
"Ouch!" someone said.