List of mammals of Guam

Template:Short description Template:Use mdy dates This is a list of the mammal species recorded in Guam. There are fifteen mammal species in and around Guam, of which two are endangered and one is considered to be extinct.

The following tags are used to highlight each species' conservation status as assessed by the International Union for Conservation of Nature:

Template:IUCN status	Extinct	No reasonable doubt that the last individual has died.
Template:IUCN status	Extinct in the wild	Known only to survive in captivity or as a naturalized populations well outside its previous range.
Template:IUCN status	Critically endangered	The species is in imminent risk of extinction in the wild.
Template:IUCN status	Endangered	The species is facing an extremely high risk of extinction in the wild.
Template:IUCN status	Vulnerable	The species is facing a high risk of extinction in the wild.
Template:IUCN status	Near threatened	The species does not meet any of the criteria that would categorise it as risking extinction but it is likely to do so in the future.
Template:IUCN status	Least concern	There are no current identifiable risks to the species.
Template:IUCN status	Data deficient	There is inadequate information to make an assessment of the risks to this species.

Order: Chiroptera (bats)

The bats' most distinguishing feature is that their forelimbs are developed as wings, making them the only mammals capable of flight. Bat species account for about 20% of all mammals.

• Family: Pteropodidae (flying foxes, Old World fruit bats)
  • Subfamily: Pteropodinae
    • Genus: Pteropus
      • Mariana fruit bat, Pteropus mariannus Template:IUCN status
      • Guam flying fox, Pteropus tokudae Template:IUCN status
• Family: Emballonuridae
  • Genus: Emballonura
    • Polynesian sheath-tailed bat, Emballonura semicaudata Template:IUCN status (extirpated from Guam)

Order: Cetacea (whales)

File:Killerwhales jumping.jpg

Orca

The order Cetacea includes whales, dolphins and porpoises. They are the mammals most fully adapted to aquatic life with a spindle-shaped nearly hairless body, protected by a thick layer of blubber, forelimbs, and tails modified to provide propulsion underwater.

• Suborder: Mysticeti
  • Family: Balaenopteridae
    • Subfamily: Balaenopterinae
      • Genus: Balaenoptera
        • Sei whale, Balaenoptera borealis Template:IUCN status
        • Bryde's whale, Balaenoptera edeni Template:IUCN status
    • Subfamily: Megapterinae
      • Genus: Megaptera
        • Humpback whale, Megaptera novaeangliae Template:IUCN status
• Suborder: Odontoceti
  • • Family: Physeteridae
      • Genus: Physeter
        • Sperm whale, Physeter macrocephalus Template:IUCN status
  • Superfamily: Platanistoidea
    • Family: Kogiidae
      • Genus: Kogia
        • Dwarf sperm whale, Kogia sima Template:IUCN status
    • Family: Ziphidae
      • Subfamily: Hyperoodontinae
        • Genus: Mesoplodon
          • Blainville's beaked whale, Mesoplodon densirostris Template:IUCN status
    • Family: Delphinidae (marine dolphins)
      • Genus: Lagenodelphis
        • Fraser's dolphin, Lagenodelphis hosei Template:IUCN status
      • Genus: Peponocephala
        • Melon-headed whale, Peponocephala electra Template:IUCN status
      • Genus: Feresa
        • Pygmy killer whale, Feresa attenuata Template:IUCN status
      • Genus: Pseudorca
        • False killer whale, Pseudorca crassidens Template:IUCN status
      • Genus: Globicephala
        • Short-finned pilot whale, Globicephala macrorhynchus Template:IUCN status
      • Genus: Orcinus
        • Orca, Orcinus orca Template:IUCN status

See also

• List of chordate orders
• Lists of mammals by region
• List of prehistoric mammals
• Mammal classification
• List of mammals described in the 2000s