Adaptation of vampire bat blood sucking

Vampire bats are also known as " a blood-eating " animal, because their nutrient source is just the blood of vertebrates.

Ordinary bat species take mammal food: mostly domesticated species such as cattle or horses. Sometimes, they also suck blood from wild animals like guinea pigs, wild boars, and sometimes humans.

Vampire bats are one of three blood- borne bats, which have mutations and adaptations in the genome to improve the immune system and metabolism.

This is one of three types of bats that survive through blood.