I don't typically carry a monopod, but I usually have this...
Amazon.com: ASP Ultimate Corrosion Resistant, Patented Foam Vinyl Grip F21E Electroless 2...: Everything ElseLast time I mentioned this, a debate began on the difference between carrying this and simply carrying a gun. So before that debate comes up I will say this: I would much rather use this as a non-lethal weapon as opposed to not only risking the animals life, but risking anyone elses who may be in the vacinity ( nearby children,passing cars, etc. ). Also, most times ( as you found out with your monopod) simply waving the weapon will keep a dog away. I originally bought this when pushing my newborn around my neighborhood in a stroller. A large pitbull came out of nowhere. Personally, I could have easily hopped a fence or something to get away. But I could not do this while carrying a baby. Luckily the owner came running out of a house and grabbed the dog before it turned ugly.
BTW, its collapsible which I don't see mentioned in that add. So its easy to put in the little side pocket on my backpack or in a beltloop holder.