Still the little one could not sleep.
“Sir?” he began again.
“Hey?” said Gavroche.
“What are rats?”
“They are mice.”
This explanation reassured the child a little. He had seen white mice in the course of his life, and he was not afraid of them. Nevertheless, he lifted up his voice once more.
“Sir?”
“Hey?” said Gavroche again.
“Why don’t you have a cat?”
“I did have one,” replied Gavroche, “I brought one here, but they ate her.”