It is important for knitters to know two things about frogging: that cats are capable of this knitting action, and even seem to enjoy it and seek opportunities to do it; and that foul language is a normal, healthy accompaniment to frogging, whether it is you or the cat that accomplished the task.
At Knit's End: Meditations for Women Who Knit Too Much (ed. Storey Publishing, 2012) - ISBN: 9781603420976