Unknown snake in South America
I live in Medellin, in Colombia, and today I found a small snake on the elevator of my building. It is VERY strange to find snakes in big cities, so I have no idea of what kind of snake is it. The thing is that I took a picture. You'll see it from a 30cm distance. It was not aggressive and it was very small, I don't know if it's a baby snake or just a small variety.
I'd like to know if there could be more (his mother, for example) due to its variety and habits, and if they're a dangerous or poisonous species.