The monkeys in India, knowing by instinct how dangerous snakes are, are most vigilant in their destruction. They seize them by the neck, when asleep, and running to the nearest flat stone, grind down their heads by a strong friction on the surface, often looking at them, and grinning at their progress. When sure that the poisonous fangs are destroyed, they toss the reptiles to their young ones to play with, and seem to be greatly pleased at the death of their enemies.