I’ll let you google the exact dosage per pound …. or do your own math equation …. but doing this saves me 0 a year … so my front line will cost me 0 instead of approx. 0 if I were to purchased each individual dog their own individually packaged front line. Many years ago – I used to purchase twice the weight and divided one individual package of front line between two equally sized dogs, but this gives an exact dosage that won’t “over kill” your dog or your pocketbook.