Vampire Bats In Mexico

The characters in the typical Hollywood vampire flick, always believe that they have locked themselves safely into a room for the night. Typically, they are rudely disturbed by a bat, which flies through an open window and transforms itself into a monster. This horror imagery that has long been ingrained into the human psyche, means that many people automatically associate bats with physical harm, if not outright terror. However, most lowly bats wouldn't think of coming near humans, and may only wish to nibble on a moth or other small insect for dinner. One type of Chiroptera, which is part of the leaf-nosed bat family, is a type that will feed on blood, and which is also well-known to be parasitic. The range of the Vampire bat, coincidentally, extends throughout all of Central America and is found in Mexico as well.

The vampire bats are called, appropriately enough, 'Desmodontinae'. There are three genii in this group, each with one species, and all of them are hematophagic: the blood of other living things is their main food source. All three share the similar characteristics of having a short muzzle, small ears, and specialized front teeth which are used to cut open flesh. These animals are incredibly well-evolved to hunt for their prized foodstuff and it's been found that the auditory center of their brain is adapted to detect the regular, steady breathing of sleeping animals, which are their primary prey. Strangely, these animals (unlike other Chiroptera which are unable to move on land) can run for brief periods of time.

The most widely seen species is the Common Vampire Bat, seen all over Central and South America. They feed on mammals like tapir in the wild, but prefer domesticated animals like horses and cattle, making them very annoying to ranchers. They hunt during the darkest part of the night and once they've found their prey, they will use their sharp teeth to pierce the skin, peeling away a small flap to expose the vessels underneath. Then, with their specialized grooved tongue, they lick away the blood; clotting is prevented by an anticoagulant in their saliva.

The Common species grooms one another, shares food and is extremely social, exhibiting many cooperative behaviors. The males will have whole harems of mates, which they fiercely defend. They also show alloparenting; the females will adopt orphaned babies and will share the duties of raising the young with other females. It is a misconception that all Vampire Bats carry rabies; it's estimated that only about half of one percent have it. Nonetheless, a bite from a bat should always be examined by a doctor, just in case.

They have similar behaviors to the Common, but the other two species are not as widely located. The Hairy-legged Vampire Bat, has quite good eyesight but poor echolocation abilities, likes the blood of birds over that of mammals, and is mostly found in South America. It is also more solitary, and does not form the same complex social groups as its cousin. The third variety, the White-Winged, is found in Mexico and Argentina. It also prefers avian prey, and is a very proficient climber of trees. They are also more docile and very vocal.


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