They gain very little because they urinate most of the liquid that they consume, digesting what they need.
Vampires and Vampire bats both drink blood. The only difference is that vampire bats drink animal blood. Plus vampire bats are real. The other type are fictional.
Vampire bats typically drink blood from sleeping animals.
Vampire bats live on blood.
because they are fruit bats, not vampire bats...
Bats that drink blood from animals.
Most small bats eat insects, and large fruit bats eat fruit. Central American vampire bats walk up to livestock, bite them, and lick several drops of their blood; bats do not drink blood.
Only some species of bat drink blood. Notably the Vampire Bat. They drink blood for the nutrients in it.
vampire bats usually drink cow or monkey blood but if they drink a humans they will most commonly drink from the big toe.
Vampire bats are real bats that drink blood. They cut a hole in an animal's skin and lap up the blood. They are not vampires, they're just bats.
Most bats do not drink blood. The only bats that do are the three species of vampire bats. Two of these do drink bird blood, and would probably enjoy chicken blood.
They are mainly called that because the behavior of the bats was similar to that of the legendary 'vampire' that would suck blood from humans and animals. Vampire bats drink blood (usually only a few drops) from animals.
They bite animals and drink their blood, this is why they are called vampire bats.