This book is what we used to weigh-down the overturned laundry basket which served as a temporary kitten jail. (underneath, there was a heated cat pad, covered by a towel, washcloth-stuffed handle-holes, and three very inventive and clever kittenz who wanted OUT! As to the book title, well, apparently Practical Unix and Internet Security works for Practical Kitten Security as well. Who'd've thought?