---
title: "Common Vampire Bat (Desmodus rotundus) | AnimalTracks.wiki"
description: "One of only three mammals that must feed on blood, it finds warm prey through heat-sensing pits on its face and crosses the ground on all fours to reach it."
image: "https://animaltracks.wiki/images/animals/vampire-bat-1.webp"
published: "2026-08-30"
updated: "2026-09-24"
---
# Common Vampire Bat (*Desmodus rotundus*)
> **Status**: Checked against 10 sources, listed under Sources below.
> **Tagline**: One of only three mammals that must feed on blood, it finds warm prey through heat-sensing pits on its face and crosses the ground on all fours to reach it.
> **Soundtrack Vibe**: 80s Retrowave & Synthwave // Chromatics, "Tick Of The Clock"
> **Soundtrack Links**: [Spotify](https://open.spotify.com/track/0nEC9Ixpk5SsvXkeG7iI5B)
> **Vibe Match**: Night-drive synths made for moving through the dark, for a bat that finds warm-blooded prey by detecting infrared radiation through pit organs on its face.
## Biological Superpowers & Stats
- **Taxonomy**: *Desmodus rotundus*
- **Danger Level**: Medium
- **Conservation Status**: Least Concern ([IUCN Red List](https://doi.org/10.2305/iucn.uk.2015-4.rlts.t6510a21979045.en))
- **Superpower**: Anticoagulant saliva, infrared-sensing pits on its face, and a bounding run on land powered by its wings
- **Habitat**: Caves, tree hollows and old mine shafts in warm regions from southern Mexico to northern Argentina and Chile
- **Diet**: Blood only, mainly from mammals such as cattle, horses, pigs and wild tapirs
- **Tags**: mammal, echolocation, infrared-vision, nocturnal
## Natural History & Behavior
## One of Only Three Blood-Feeding Mammals
The common vampire bat (*Desmodus rotundus*) does not look monstrous. It weighs 15 to 50 grams, with a wingspan of 35 to 40 centimeters and a body 7 to 9 centimeters long. What makes it strange is its diet: it is one of only three mammals that must feed on blood, a habit called sanguivory, and it eats nothing else.
It ranges through warm tropical and subtropical country from southern Mexico down to northern Argentina and Chile, roosting alongside tens to thousands of others in caves, tree hollows, old mine shafts and abandoned buildings. It feeds mainly on mammal blood, from wild tapirs to livestock such as cattle, horses and pigs. In captivity, one vampire bat lived to 29.2 years old.
## A Heat-Guided, Barely-Felt Bite
Finding a meal starts with heat. The bat detects infrared radiation to locate hotspots on warm-blooded prey, through nerve fibers running to pit organs on its face. Among vertebrates, only vampire bats, pit vipers, boas and pythons can sense infrared. A protein called TRPV1, which still detects painful heat elsewhere in the bat's body, has its trigger point lowered to about 30 degrees Celsius in these facial nerves.
The bat usually lands near its host and walks or hops up to it, then makes a 3-millimeter incision in the skin. Proteins in its saliva keep the wound from clotting while it laps up the blood, rather than sucking it. The bite is relatively painless and rarely wakes a sleeping animal.
## Built to Run
Bats have become so specialized for flight that they have almost lost the ability to move on land at all. Vampire bats are an important exception. The common vampire bat walks, hops and runs, and its run is a bounding gait powered by its wings instead of its hind legs, an ability that seems to have evolved independently within the bat lineage. Its complex moves on the ground, which include vertical jumps that launch it into flight, are tied to its unusual way of feeding.
> **A Launch Like a Catapult** In a flight-starting jump, the push against the ground can peak at 9.5 times the bat's own body weight within about 30 milliseconds, launching it at an average of about 2.4 meters a second.
On the ground, it can run at up to 2.5 miles an hour.
## A Buddy System With Teeth
Blood is a bad fuel to run low on. Two nights without a blood meal and a vampire bat starves to death, biologist Gerald Wilkinson wrote in 1990, unless it can get a roostmate to share. Common vampire bats often regurgitate food to roost-mates that fail to feed.
A 2013 study that fasted 20 vampire bats one at a time found that this sharing is not explained by kinship alone. How much food a bat had received from a particular partner was the best predictor of how much it gave back to that bat, 8.5 times more important than relatedness. Donors also started the sharing more often than the hungry bats did, which does not fit the idea that they were pestered into it.
## Frequently Asked Questions
### How does a vampire bat's saliva keep blood from clotting?
Special proteins in its saliva keep the wound from clotting while the bat laps up the blood. It doesn't suck blood at all. It laps it from a small cut made with its sharp front teeth. *(Source: [Bat Conservation International]())*
### How does a vampire bat find where to bite?
By heat. It has pit organs on its face, wired to nerves that pick up infrared radiation, and it uses them to locate hotspots on warm- blooded prey. Apart from vampire bats, only boas, pythons and pit vipers among vertebrates can detect infrared. *(Source: [Gracheva et al. 2011]())*
### What happens if a vampire bat can't find a meal?
It is in trouble fast. Two nights without a blood meal and a vampire bat starves to death, unless it can get a roostmate to share, Gerald Wilkinson wrote in 1990. He described a buddy system that keeps food distribution among the bats fair. *(Source: [Wilkinson 1990]())*
### Do vampire bats actually share blood fairly, or just dump it on whoever's nearby?
Mostly by paying back help. When researchers fasted bats one at a time, the amount a bat had been fed by a partner predicted what it gave that partner better than anything else, and mattered 8.5 times more than kinship. Donors also made the first move more often than the hungry bats, which does not fit bullying. *(Source: [Carter & Wilkinson 2013]())*
## Sources
1. [Desmodus rotundus (vampire bat). Animal Diversity Web, University of Michigan.]()
2. [Common Vampire Bat. Bat Conservation International.]()
3. [AnAge entry for Desmodus rotundus. AnAge: The Animal Ageing and Longevity Database, Human Ageing Genomic Resources.]()
4. [Barquez et al. (2015). Desmodus rotundus. The IUCN Red List of Threatened Species 2015: e.T6510A21979045.]()
5. [Zepeda Mendoza et al. (2018). Hologenomic adaptations underlying the evolution of sanguivory in the common vampire bat. Nature Ecology & Evolution.]()
6. [Gracheva et al. (2011). Ganglion-specific splicing of TRPV1 underlies infrared sensation in vampire bats. Nature.]()
7. [Schutt et al. (1997). The Dynamics of Flight-Initiating Jumps in the Common Vampire Bat Desmodus Rotundus. Journal of Experimental Biology.]()
8. [Riskin & Hermanson (2005). Independent evolution of running in vampire bats. Nature.]()
9. [Carter & Wilkinson (2013). Food sharing in vampire bats: reciprocal help predicts donations more than relatedness or harassment. Proceedings of the Royal Society B: Biological Sciences.]()
10. [Wilkinson (1990). Food Sharing in Vampire Bats. Scientific American.]()
*Published August 30, 2026. Last updated September 24, 2026.*
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