Fulfilling the role of the vulture, schools of piranha keep the river clean by consuming dead or injured animals, insects, snails, scraps and even plants. Their razor-sharp teeth can strip flesh from a large animal in minutes, but they themselves are commonly eaten by local people who use the fishes’ jaws as scissors.
Manouria emys The largest tortoise on the Asian mainland, this species prefers rainy habitats where the humidity remains high. Although not particularly social, the…