Related by context. Frequent words. (Click for all words.) 48 humans 41 overbreeding 41 Rhesus monkeys 40 nonhuman primate 39 euthanise 39 ground sloths 39 anthropomorphize 39 cows sheep goats 38 chickens pigs 38 australopithecines 38 elk bison 38 Scientists theorize 38 Toxoplasma 37 hookworms 37 Artificial insemination 37 monkeys apes 37 human 37 Paranthropus 37 domestication 37 reproduce asexually 37 rinderpest 37 bisons 37 anatomically modern 37 T. gondii 36 H. sapiens 36 infecting humans 36 peccaries 36 humanlike 36 quadrupeds 36 wooly mammoths 36 lowland gorillas 36 goats sheep 36 vertebrate animals 36 rhesus monkey 35 velociraptors 35 corona virus 35 Toxoplasmosis 35 Domestication 35 gut microbiota 35 evolutionary adaptation 35 animals 35 elephants rhinos 35 gonadal 35 Smilodon 35 simian immunodeficiency virus 35 civet cats 35 mammalian species 35 domesticated 34 nonhuman primates 34 lab rats 34 selective breeding 34 reproductively 34 ritual slaughter 34 coevolution 34 biped 34 capybaras 34 flatworms 34 minotaurs 34 homo erectus 34 slaughtering 34 slaughter 34 inseminating 33 sicken humans 33 Toxoplasma gondii 33 genetically programmed 33 sheep goats 33 SARS CoV 33 Frans de Waal 33 protozoan 33 crocodilians 33 tusked 33 nonhuman 33 Amgen discovers develops manufactures 33 camels 33 parasitic worms 33 poxviruses 33 neural crest cells 33 sexual dimorphism 33 monkeys 33 health care hhc 33 bovine 33 fruitflies 33 nonhuman animals 33 infects humans 33 cone snails 33 domesticated cats 33 echidnas 33 D cycloserine 33 primates 33 genetic alteration 33 Varki 33 Sumatran orangutans 33 mammals 33 apelike 33 cows sheep 32 mammalian 32 ostriches 32 sheep herders 32 Scientifically speaking 32 neural cells 32 Homo sapiens