This is an absolutely incredible picture of an African rock python constricting and attempting to swallow a female goat. The python itself is huge, 15 feet long, and may well manage to consume the whole thing.
Snakes that constrict their prey are generally non-venomous. Among them are anacondas, pythons, king snakes, carpet snakes and boa constrictors. If the prey are smaller mammals, the snake strikes and pulls them into its coils; if larger, it pulls itself onto and around the prey.