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Non-native: Gambian Rat Reporting
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Gambian Rat Reporting Page
Gambian rats are native to Africa. They were bred in
captivity on Grassy Key, north of Marathon. Around five years ago, eight
rats escaped and have established a reproducing population. Gambian
rats primarily eat fruit and grains, but they have been known to eat
insects, crabs and snails. The Florida Fish and Wildlife Conservation
Commission is preparing to eliminate this exotic species to prevent
potential impact to native species and disease transmission.
Gambian rats are large rodents, weighing an average
of 3 lbs., and measure from 20-35 inches from the head to the tip of
the tail. A distinctive feature is the long tail (14-18 inches) that
is virtually hairless, with the last third a creamy color. The Gambian
rat is larger than the common black rat (also an introduced species),
and native Florida species including the Key Largo wood rat, cotton
rat, and silver rice rat.
(Gambian Rat with tail)
WHERE ARE THEY FOUND?
Gambian rats are often seen around houses, particularly
where pets are fed outside. Gambian rats are most active at night. They
climb well but spend much time on the ground. To date, Gambian rats
have been observed only on Grassy Key.
Map of Area
SIMILAR SPECIES
Gambian rats are larger than the more common
black rat and
black rat with color variation (also an introduced species)
and native Florida species including the
Key Largo wood rat,
cotton rat and
silver rice rat.
Possums are of similar size and may be mistaken for
Gambian rats in low light. However, the white face and completely whitish
tail distinguish the two.
(Opossum)
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Contact Us
Additional Contact Information:
Scott Hardin
Exotic Species Coordinator
Florida Fish and Wildlife Conservation Commission
(850)488-4068
(850)413-0381 FAX
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