Biopest control is a natural way of controlling pests that harm plants and crops. Natural enemies are used to check the population of pests by using various animals and birds which prey upon insects and animals that harm agricultural produce. Snakes are one of the animals which prey upon rats, mice and various other pests. Large varieties of birds, such as owls and peacocks prey upon vermin and pests. Lizards are also helpful in reducing the population of many insects that harm the plants.