A vampire licks blood from a chicken's foot.
There are lots of stories about vampires that drink blood. Many of these are myths or made up stories.
Vampire bats are 3 species out of about 1000 from the bat family. They mostly live in South America and feed on the blood of farm animals. A vampire bat does not suck blood. They usually walk up to the animal while they are asleep. They then use their sharp teeth to puncture the skin and then lick up the blood.
Their saliva has a blood thinning chemical that people are studying.