PetSafe Big Dog Bark Control Collar
Don't be fooled by this lightweight micro-collar.  The QuickFit™ buckle ensures a perfect fit for neck sizes up to 34 inches; Light Touch technology provides 10 levels of self-adjusting correction; and the patented Perfect Bark™ technology makes sure that your dog's bark is the only one that can activate it.  In other words, this collar has exactly what your barking big dog needs.