Ten Years Later: The Man in The Iron Mask by Alexandre Dumas Chapter 47 Page 13

“In common prudence,” said Aramis, “let us go back into the grotto; the voices evidently draw nearer, we shall soon know what we have to trust to.”

They re-entered, but had scarcely proceeded a hundred steps in the darkness, when a noise like the hoarse sigh of a creature in distress resounded through the cavern, and breathless, rapid, terrified, a fox passed like a flash of lightning before the fugitives, leaped over the boat and disappeared, leaving behind its sour scent, which was perceptible for several seconds under the low vaults of the cave.

“The fox!” cried the Bretons, with the glad surprise of born hunters.

“Accursed mischance!” cried the bishop, “our retreat is discovered.”