Yes, a human child-sized bat has been discovered in Peru. Reports from the area "state that this animal attacked several people walking through the jungle and elsewhere in Latin America." Continue reading for a video on how bats hunt for their prey and more information on this human-sized bat.
Many say that this is the Chupa Cabra, an animal reported to attack various types of livestock and suck their blood, but this creature is not a Chupa Cabra, but probably it is a giant golden-crowned Flying Fox, one of the largest species of bats in the world with a wingspan of 1.5-1.7 m (4 ft 10 in - 5 ft 7 in).
[Sources 1 | 2]