Patterdales - Good workers or Family pets

From Devon, 1 post

i have 2 patterdale`s one works and the other is to lazy . one is a b***h who love`s to work and my male is sooooo lazy he is such a good family dog almost to the point that he should be walking along a beach with a old couple .
she is energetic on the ball and straight on any rat`s and will chase a cat for mile`s
so is there any difference between the sexes or id it just my boy`s warped nature