Megabat long, thus smaller than some microbats, for example, the Mauritian tomb bat. The largest attain a wingspan of , and weigh as much as . Most fruit bats have large eyes, allowing them to orient themselves visually in twilight and inside caves and forests. Their sense of smell is excellent. In contrast to the microbats, the fruit bats do not use echolocation (with one exception, the Egyptian fruit bat "Rousettus egyptiacus", which uses high-pitched tongue clicks to navigate in caves). Megabats make up the only family (Pteropodidae) in order Chiroptera that is not capable of laryngeal echolocation. Echolocation and flight
Vampire Bats (film) more student is killed in the pool by the bats. Maddy rushes to find a solution while learning that the bats' mutation is an indirect result of toxic waste that contaminated the local water source, creating mutations in the deer that the bats feed on, thus making the bats too mutants. Meanwhile another group of bats is found in a church (yet still not the whole population). Maddy's students accidentally find out that the bats are attracted to loudspeakers or anything that emits sounds similarly, as they mistake those sounds as reflected ultrasounds. They decide to set a trap in