

Sara and Ben are twins. They like to play in the park. One day, they see a big truck with many animals. The truck says "Zoo". Sara and Ben want to see the animals.
They run to the truck and peek inside. They see a lion, a monkey, a zebra and a snake. The lion is sleeping. The monkey is jumping. The zebra is eating. The snake is hissing.
"Wow, look at the animals!" Sara says.
"They are so cool!" Ben says.
But then, the snake sees Sara and Ben. It is angry. It wants to escape. It pushes the door of the truck with its tail. The door opens. The snake slithers out.
"Help! The snake is out!" Sara screams.
"Run, run, run!" Ben shouts.
Sara and Ben run away from the snake. They are scared. The snake chases them. It is fast. It wants to bite them.
But then, a man sees the snake. He is the zookeeper. He has a net. He throws the net over the snake. He catches the snake.
"Got you, you naughty snake!" the zookeeper says.
He puts the snake back in the truck. He closes the door. He locks it.
"Are you okay, kids?" the zookeeper asks Sara and Ben.
"Yes, we are okay. Thank you, mister," Sara says.
"That was a close one. You should not go near the truck. The animals are not for playing. They are for the zoo. They can be dangerous," the zookeeper says.
"Sorry, mister. We were curious. We wanted to see the animals," Ben says.
"I understand. But you have to be careful. The animals are not like your toys. They have their own feelings and needs. They can be weird sometimes. They can gain or lose their temper. They can escape or attack. You have to respect them," the zookeeper says.
"We will, mister. We will respect the animals. We will not go near the truck again," Sara and Ben say.
"Good. Now, go back to your parents. They must be worried. And have fun in the park. But stay safe," the zookeeper says.
Sara and Ben nod. They run back to their parents. They hug them. They tell them what happened. Their parents are glad they are okay. They are also proud of them. They learned a lesson. They learned to respect the animals. They learned to be careful. They learned to be brave.
