| Most common words | Mammal |
| Zoo, China, born, home, wild, cub, mei, bamboo, bear, cubs | |
| Species, whale, river, genus, bottlenose, killer, humans, fish, common, marine | |
| Australia, mammals, species, animal, water, monotremes, found, venom, one, young | |
| Ground, two-toed, three-toed, one, very, living, bradypus, species, long, family | |
| Giant, species, tamandua, genus, silky, insects, America, southern, tongue, long | |
| Homo, species, years, main, social, through, sapians, ago, groups, modern | |
| Lowland, mountain, western, silverback, females, eastern, species, forest, males, live | |
| Species, Malayan, mountain, tapirus, Brazilian, four, years, water, America, baird | |
| Breeds, wool, used, many, meat, ewes, animals, lamb, lambs, flock | |
| Madagascar, Malagasy, foraging, name, finger, lemurs, trees, breeding, typically, habitat | |
| | Most common words | Mammal |
| Water, years, animals, Africa, species, one, large, million, zoo, land | |
| Used, breeds, wild, main, animals, domesticated, many, riding, bones, developed | |
| Species, dwarf, syrian, genus, Chinese, phodopus, Russian, called, one, two | |
| Family, quills, world, sphiggurus, hystrix, American, north, dwarf, coendou, new | |
| Prey, China, wild, India, subspecies, large, white, male, population, south | |
| Species, red, hunting, vulpes, dogs, many, silver, tail, domesticated, united | |
| North, American, dams, species, eurasian, trees, water, lodge, fur, one | |
| African, Asian, species, animals, trunk, family, known, groups, Africa, tusks | |
| Sea, tusks, Pacific, Atlantic, males, population, ice, around, species, years | |
| Species, Australia, Queensland, south, Australian, although, eucalypt, southern, population, bear | |
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