The male turns onto his belly. Tikki steps onto the bed and straddles his back. She grabs his left wrist and flattens his hand against the mattress. She puts the muzzle of the Viper against his small finger, where the finger meets the hand. She knows what the loss of this finger might mean to a human. When humans lose limbs, the limbs do not grow back. Humans sometimes die because they heal so slowly that all their blood leaks away. They are really very fragile.