Because of your pets health. If you have a 26lb dog receiving a pill for 26-50lb dogs, not only are you giving them double the necessary dose of neurotoxins and pesticides, but you are giving them an *entire months* worth up front. An entire months dose for a 50lb dog. These things *could* be given on a weekly basis at a dose intended for a 26lb dog.
Making the world better, one answer at a time. I am a sixty one year old woman who is in good health. I received a tetanus shot yesterday and hours later I was feeling a bit tired. Romany Sedhom.
You will need a tetanus shot if: 1  Your wound was caused by something that was clean and your last tetanus shot was longer than 10 years ago. 2  Your wound was caused by something that was dirty and your last tetanus shot was longer than 5 years ago. You are not sure if your wound was caused by something clean or dirty and your last tetanus shot was longer than 5 years ago. You are not sure when you had your last tetanus shot. You did not get the first series of tetanus shots (primary vaccination series).