My dog has this odd pimple/mole like bump on his leg...What is it?

I notice this on my dogs leg. My dog doesn%26#039;t seem to mind it, but i%26#039;ve never seen anything like this before. I no its not a hot spot as i have dealt with them before. Anyone have any ideas...should i be worried?|||It could be a cizt, but you really should ask your vet.|||It could be any number of things from a pimple to a mole to a tumor. No one here can even make an educated guess without seeing your dog. Your vet is the best person to determine what it is.|||It is impossible to say. Keep an eye on it and if it changes call a vet.