Related by context. Frequent words. (Click for all words.) 54 rhesus monkey 53 Sumatran orangutans 53 chimpanzees gorillas 52 marmosets 52 gorillas chimpanzees 52 Bornean 52 Xenopus 52 clouded leopard 52 Vertebrate 52 echidnas 51 kipunji 51 simian immunodeficiency virus 51 Great Ape Trust 51 Sumatran orangutan 51 ring tailed lemur 51 anteaters 51 elephants rhinos 51 rabbits guinea pigs 50 lizards snakes 50 frogs salamanders 50 Mammalian 50 Pruetz 50 zebra finches 50 vocalisations 50 reproductive physiology 49 Frans de Waal 49 monotremes 49 amphibians reptiles 49 tigers leopards 49 peccary 49 snakes lizards 49 aardvarks 49 rhesus 49 Sociobiology 48 placental mammals 48 clouded leopards 48 mammal curator 48 tapirs 48 macaque 48 lowland gorillas 48 Sumatran rhinoceros 48 tigers elephants 48 Western lowland gorillas 48 frogs turtles 48 lions elephants 48 duck billed platypus 48 springtails 48 chimpanzees 48 gibbons 48 capuchins 48 pine martens 48 gibbon 47 subfamilies 47 apes 47 platypuses 47 Animal Behaviour 47 nonhuman primate 47 Gestation 47 giant anteater 47 reproduce asexually 47 Darwin finches 47 vertebrate animals 47 chimps 47 primate 47 translocated 47 genome sequences 47 Barn owls 47 cats ferrets 47 Microraptor 47 peccaries 47 Panbanisha 47 mating habits 47 Evolutionary Anthropology 47 Grevy zebra 47 insectivores 47 mice rats 46 aurochs 46 flatworms 46 Paignton Zoo 46 hornbills 46 Lemurs 46 primate species 46 larval stages 46 melanogaster 46 pubic lice 46 macaque monkeys 46 ligers 46 reptiles amphibians 46 bonobo 46 metabolome 46 banteng 46 sugar gliders 46 zoologists 46 rhesus monkeys 46 New Caledonian crows 46 coatimundi 46 capuchin monkeys 46 squirrel monkeys 46 kinkajou 46 monkeys 46 tarsier