Stephen Dalton / Greater false vampire bat {Megaderma lyra} in flight, carrying rodent prey, controlled conditions, from Asia

Barry Mansell / Common Vampire Bat (Desmodus rotundus) in flight, Mexico

Michael & Patricia Fogden / Vampire Bat (Desmodus rotundus) portrait, Costa Rica

Michael & Patricia Fogden / Vampire Bat (Desmodus rotundus) portrait, Costa Rica

JIM CLARE / Common vampire bat feeding on young sealion blood, Paracas NP Peru

Dietmar Nill / Common vampire bat {Desmodus rotundus} feeds off blood from bird's foot. Central America

JIM CLARE / Vampire bat (Desmodus rotundus) feeding on cow blood. Trinidad, Caribbean

JIM CLARE / Vampire bat (Desmodus rotundus) feeding on cow blood. Trinidad, Caribbean

Barry Mansell / Common vampire bat portrait {Desmodus rotundus} Sonora, Mexico, Central America

Piotr Naskrecki / Vampire Bat (Desmodus rotundus), Suriname

Piotr Naskrecki / Vampire Bat (Desmodus rotundus), Suriname

Ben Lascelles / Common Vampire Bats (Desmodus rotundus) day roosting in a hollow tree, one baring its teeth at the camera. Chaco region, Argentina, October.

Ben Lascelles / Common Vampire Bats (Desmodus rotundus), day roosting in a hollow tree. Chaco region, Argentina. October.

Roland Seitre / Australian False Vampire Bat / Ghost Bat (Macroderma gigas) roosting. Captive. Desert Park, Alice Springs, New Territories.

Piotr Naskrecki / Vampire Bat (Desmodus rotundus) with parasitic Louse Flies (Trichobius parasiticus) behind its ear, Sipaliwini, Surinam

Barry Mansell / Common vampire bat (Desmodus rotundus) at roost, Sonora, Mexico

Barry Mansell / Common vampire bat (Desmodus rotundus) at roost, Sonora, Mexico

Stephen Dalton / Greter false vampire bat (Megaderma lyra) feeding on mouse, India, controlled conditions

Stephen Dalton / Greater false vampire bat (Megaderma lyra) flying in complete darkness between wire strands, demonstrating echo location, Research at Frankfurt University, Germany, controlled conditions

Stephen Dalton / Common vampire bat (Desmodus rotundus) at rest with mouth open, from Central America, controlled conditions

Stephen Dalton / Greater false vampire bat (Megaderma lyra) in flight approaching mouse prey (perspex sheet protects mouse)

Chien Lee / Lesser False Vampire Bat (Megaderma spasma) pair roosting in cave, Sekunyit, Bau, Malaysia

Chien Lee / Lesser False Vampire Bat (Megaderma spasma) roosting in cave, Sekunyit, Bau, Malaysia

Chien Lee / Lesser False Vampire Bat (Megaderma spasma) roosting in cave, Sekunyit, Bau, Malaysia

Stephen Dalton / Common vampire bat (Desmodus rotundus) controlled conditions, from South America

Stephen Dalton / Greater false vampire bat {Megaderma lyra} in flight carrying rodent prey, controlled conditions, from Asia

Barry Mansell / Hairy-legged Vampire Bat (Diphylla ecaudata) in flight at night, Tampaulipas, Mexico

Barry Mansell / Hairy-legged Vampire Bat (Diphylla ecaudata) in flight at night, Tampaulipas, Mexico

Barry Mansell / Hairy-legged Vampire Bat (Diphylla ecaudata) in flight at night, Tampaulipas, Mexico

Barry Mansell / Hairy-legged Vampire Bat (Diphylla ecaudata) in flight at night, Tampaulipas, Mexico

Barry Mansell / Hairy-legged Vampire Bat (Diphylla ecaudata) portrait, Tampaulipas, Mexico

Barry Mansell / Hairy-legged Vampire Bat (Diphylla ecaudata) in flight at night, Mexico

Barry Mansell / Hairy-legged Vampire Bat (Diphylla ecaudata) in flight at night, Nauvo Leon , South East Mexico, January

Barry Mansell / Hairy-legged Vampire Bat (Diphylla ecaudata) drinking blood from a chicken's foot, Mexico,

Barry Mansell / Hairy-legged Vampire Bat (Diphylla ecaudata) drinking blood from a chicken's foot, Mexico,

Barry Mansell / Hairy-legged Vampire Bat (Diphylla ecaudata) in flight at night, Tamaulipas, Mexico

Barry Mansell / Hairy-legged Vampire Bat (Diphylla ecaudata) taking blood from a chicken, Mexico, December

Claudio Contreras / Common vampire bat (Desmodus rotundus) captive, Chacmultun, Yucatan Peninsula, Mexico, June

Dietmar Nill / Common vampire bat (Desmodus rotundus) Santa Rosa, Costa Rica

Dietmar Nill / Common vampire bats (Desmodus rotundus) at roost site, Santa Rosa, Costa Rica

Jouan & Rius / Ghost bat / Australian false vampire bat (Macroderma gigas) roosting, Central Australia

Jouan & Rius / Ghost bat / Australian false vampire bat (Macroderma gigas) roosting, Central Australia,

Nick Upton / Common vampire bats (Desmodus rotundus) roosting in a hollow tree, Trinidad.

Barry Mansell / Common Vampire Bat (Desmodus rotundus) with bat flies, Mexico

Barry Mansell / Common Vampire Bat (Desmodus rotundus) captive, Nuevo Leon, Mexico

Barry Mansell / Three Common Vampire Bats (Desmodus rotundus), Mexico

Barry Mansell / Common Vampire Bat (Desmodus rotundus) in flight, Mexico

Nick Gordon / Common vampire bat (Desmodus rotundus) feeding on mammalian blood, Amazonia, Brazil

Daniel Gomez / Common vampire bat {Desmodus rotundus} held in hand, Brazil.

Daniel Gomez / Kate Humble with Vampire bat {Desmodus rotundus} for making of BBC series 'Amazon AbyssÆ

Matthias Breiter / Ghost Bat (Macroderma gigas), Territory Wildlife Park, Berry Springs, Australia

Elizabeth White / Common vampire bat {Desmodus rotundus} in cave, Nigaragua

Barry Mansell / Common vampire bat (Desmodus rotundus) with mouth open, Mexico

Barry Mansell / Common vampire bat {Desmodus rotundus} Sonora, Mexico