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The larger average body size of megabats compared to echolocating bats [35] ... The virus can pass from a bat host to a human ...
The hammer-headed bat is the largest bat in mainland Africa. [12] Males have wingspans up to 90.1 cm (2.96 ft), [ 13 ] and all individuals have forearm lengths exceeding 112 mm (4.4 in). [ 12 ] It has pronounced sexual dimorphism , more so than any other bat species in the world, [ 12 ] with males up to twice as heavy as females.
Spotted-winged fruit bats are unusually small megabats, with a head-body length of 5.2 to 6.2 centimetres (2.0 to 2.4 in), [2] a wingspan of 28 centimetres (11 in), and an adult body weight of around 13 grams (0.46 oz).
It is among the heaviest of all bat species, with individuals weighing up to 1.40 kg (3.1 lb). The only bat species known to weigh more than the giant golden-crowned flying fox are the Indian flying fox (Pteropus medius) and great flying fox (Pteropus neohibernicus), with a maximum weight of 1.6 kg (3.5 lb) and 1.45 kg (3.2 lb) respectively.
The megabats, including flying foxes, have the greatest encephalization quotient (brain size relative to body size) of any bat family at 1.20. [20] This value is equivalent to that of domestic dogs. [21] Flying foxes display behaviors that indicate a reliance on long-term information storage.
In certain areas, the bat prefers coastal regions, but it can also be found at elevations up to 1,370 m (4,490 ft). [21] Flying foxes inhabit primary forest, mangrove forest, coconut groves, mixed fruit orchards, and a number of other habitats. [19] During the day, trees in mangrove forests and coconut groves may be used as roosts. [12]
The Egyptian fruit bat is among the few megabats using echolocation. Although it is considered a primitive form compared to non-megabat species, [3] [29] this has been questioned. [30] A few other megabat species echolocate via creating clicks with their wings. [29]
Therefore, compared to a terrestrial mammal of the same relative size, the bat's heart can be up to three times larger, and pump more blood. [80] Cardiac output is directly derived from heart rate and stroke volume of the blood; [ 81 ] an active microbat can reach a heart rate of 1000 beats per minute .