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Mammalia
(mammals), class, mammals
Nucleotide Protein
Ursus maritimus
(polar bear), species, carnivores
Cavia porcellus
(domestic guinea pig), species, rodents
Rattus norvegicus
(Norway rat), species, rodents
Rattus
(rats), genus, rodents
Mus musculus
(house mouse), species, rodents
Mesocricetus auratus
(golden hamster), species, rodents
Cricetulus griseus
(Chinese hamster), species, rodents
Cricetinae
(hamsters), subfamily, rodents
Rodentia
(rodent), order, rodents
Oryctolagus cuniculus
(rabbit), species, rabbits & hares
Ovis aries
(sheep), species, even-toed ungulates & whales
Bos taurus
(domestic cattle), species, even-toed ungulates & whales
Sus scrofa
(pig), species, even-toed ungulates & whales
Equus caballus
(horse), species, odd-toed ungulates
Canis lupus familiaris
(dog), subspecies, carnivores
Homo sapiens
(human), species, primates
Pan troglodytes
(chimpanzee), species, primates
Gallus gallus
(chicken), species, birds
Xenopus laevis
(African clawed frog), species, frogs & toads
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