Explanation:

The Indian bull frog (Hoplobatrachustigerinus), a recent arrival from the mainland, is steadily occupying the ecosystem in the Andamans and threatening the local economy. The voracious animal gulps down anything that would fit in its jaws: centipedes, leeches, native frogs, lizards, small snakes, and even chicks and ducklings, which are an important source of food for the islanders.

They breed by the hundreds, with each female able to lay between 3,500 and 20,000 eggs. Not all survive, but enough live to breed again, ensuring that the horde extends their range. With an average life span of seven years, and time to sexual maturity of 10-12 months, their population can dramatically shoot up in a very short time, which is precisely what happened once they landed in the islands.