Simparica Sort By Default Title - A to Z Title - Z to A Price - lowest first Price - highest first Time Added - latest first Popularity - most popular first Sales - best selling first View... $30.95 $37.50 Simparica for Dogs 11.1-22 lbs (5-10 kg) - 3 Pack View... $35.95 $43.50 Simparica for Dogs 44.1-88 lbs (20-40 kg) - 3 Pack View... $31.95 $38.70 Simparica for Dogs 22.1-44 lbs (10-20 kg) - 3 Pack View... $26.95 $32.70 Simparica for Dogs 2.8-5.5 lbs (1.3-2.5 kg) - 3 Pack View... $37.95 $46.00 Simparica for Dogs 88.1-132 lbs (40-60 kg) - 3 Pack View... $26.95 $32.70 Simparica for Dogs 5.6-11 lbs (2.5-5 kg) - 3 Pack