Okay well i'm going to start runnning in a month (weightloss goal plan) . And there are a lot of stray dogs and dogs people don't watch. I'm afraid of big dogs and was told to get some pepper spray so one come at me i mace it. What does it cost most of the time and whats a good brand . For the human element i'm bringing my tanto neck knife (wish i could jsut bring my brass knuckles be so much easier). Any input would be helpful.