We had snakes in our pond frequently, and one day I ran into one on the bank and the sucker chased me a good 50 meters. A farmer came over to see what all the girlish squealing I was doing was about, and the snake chased him too. From what I could gather, it was a red keel back which is quite poisonous. The farmer kept shaking his head to stay away from it. Usually they would catch any snake and take it home for supper. Be careful with those things!