User blog comment:D2r/Unanswered Questions of Redwall/@comment-3462718-20110426050723/@comment-3462718-20110426051257

Now that I come to think of it, The Bellmaker never specifically says Silvamord and Nagru didn't have cubs. They may have had children before they moved to Southsward, and left them behind in the Land of Ice and Snow (this would make sense especially if the cubs happened to die). But, like I said, the book doesn't ever say they did or didn't have cubs so the question really can't be answered certainly.