Related by context. Frequent words. (Click for all words.) 51 mammals 50 mammalian 48 crocodilians 48 metabolisms 48 herbivorous 47 mammal 47 omnivores 46 humans 46 arthropods 46 arthropod 46 hermaphrodites 45 symbionts 45 carnivorous 45 genetically programmed 44 digestive tracts 44 temperate zones 44 Sperm whales 43 Migrating birds 43 snakes lizards 43 Flu viruses 43 mammalian species 43 creatures 43 organism 43 parasitic worms 43 nonhuman 43 reptilian 43 infects humans 42 bipeds 42 marine invertebrates 42 sensory organs 42 nonhuman primates 42 naked mole rats 42 vertebrates 42 organisms 42 marine reptiles 42 racoons 42 single celled 42 hermaphroditic 42 herbivores 41 carnivorous dinosaurs 41 aquatic mammals 41 asexual reproduction 41 Toxoplasma 41 avian flu viruses 41 amoebae 41 flightless birds 41 crustaceans 41 Fruit flies 41 bipedal 41 vertebrate 40 species 40 homo sapiens 40 lizards 40 phylum 40 hibernating 40 majestic creatures 40 bloodsucking 40 shrews 40 carnivores 40 temperate climates 40 Cyanobacteria 40 earthworms 40 Humans 40 roundworms 40 avian species 40 domesticated 40 docile 40 baleen whales 39 microbes 39 dinos 39 human 39 nonliving 39 African savanna 39 anteaters 39 excrete 39 physiological 39 mongooses 39 Wolbachia 39 burrows 39 nocturnal animals 39 cold blooded 39 sloths 39 human beings 39 legged creatures 39 Indohyus 38 rodents 38 protozoan 38 constrictors 38 carnivore 38 amoebas 38 reptiles 38 dung beetles 38 inhabit 38 Parasites 38 cephalopods 38 critters 38 Alligators 38 Tyrannosaurus 38 inanimate 38 insects 38 creature