"But these animals live under the water, don't they? Then how can they be so easily drowned?" asked Cuthbert; but immediately adding: "Of course, I know they have to come to the surface at stated intervals to breathe. I suppose the trap holds them down beyond their allotted time, and then they suffer, just as a fellow might after a minute had passed. Now, foxes are caught on the land--are they ever know to gnaw their foot off to get free?"