Others have succeeded to some extent with red foxes, though at first they lost every one, for the cunning rascals burrowed under the fence; but a way was found to prevent that by digging down a yard, filling it with stones, and running a heavy wire mesh back several feet.

Of course the foxes kept on burrowing along the fence, but seemed to lack sense enough to start in five feet back so as to avoid the obstruction.

Their cunning has a limit, and beyond that they're as stupid as any animal." "But how about the silvers--what is the obstacle that stands in the way of making such a fox farm a success?
Perhaps they refuse to breed in captivity--I've heard of animals acting that way, even skunks at times," said the Virginian.
"No trouble in that line particularly, I believe.

The great obstacle to success lies in the fact that the silver fox is not a distinct type at all, but a freak," smiled Owen.
"A freak--that is, it can't be depended upon to reproduce its like ?" "Never does, in fact.

From a pair of silvers you will get red foxes, that's all.