You should not get another dog. Obviously you don't want dogs and whne you become bored with them you put them out, for whatever reson, algeries or no! Your step dad will still be alergic to them. These dogs have been through enough and need a nice loving home, where they will stay inside forever and be loved.

Ash

ps: Sorry if this sounds harsh but I odn't think its fare your throwing out your "old boring" dogs for new exiting dogs. Even if your dad does have "allergies"