Ever seen one snake eat another? Well, keeping yours together and you might be a firsthand witness to it. Snakes are not social except during hibernation like in rattlesnakes or during breeding.
I read a story where a guy put 2 snakes into one tub to clean out both their cages and when he came back, one had eaten the other and then one who did the eating died after that so he lost both snakes. And that was just in the time it took to clean 2 cages.