Why you should not go away when you are feeding your garter snakes.
I was feeding some of the snakes on my attic and was, in the meanwhile, hanging some laundry to dry.
This adult couple San Francisco garter snakes always eat in piece and never try to steal from each other.
But never say never! I heard the alarming sound of a snake that was in trouble. For that reason I have in every terrarium some dry leaves lying around. When one snake grabs another (by accident or not) these leaves make a characteristic sound.

This situation ended without major consequences. Two minutes after I pulled them apart they both were eating again. If I had not noticed it on time (the male already was about 7 cm in the females throat) I most probably would have found two dead snakes this afternoon.