Related by context. Frequent words. (Click for all words.) 51 gray parrot 44 Hueter 41 housecat 41 Tuszynski 40 Wydeven 39 nonhuman primates 39 Karp 39 humans 39 Bochner 39 mammal 39 macaque 38 Benchley 38 Bossart 38 gibbon 38 rhesus macaques 38 Nussbaum 38 parrot 38 bonobos 38 littermates 37 Evolutionary Anthropology 37 Friedenberg 37 primatologist 37 Schoelkopf 37 chimpanzees 37 bonobo 36 chimpanzee 36 cockatiel 36 Steig 36 rhesus monkeys 36 chimps 36 Guillette 36 border collie 36 Schacter 36 Batzer 35 Finklestein 35 primates 35 chimp 35 Goldhaber 35 mammals 35 ape 35 calico cat 35 basking shark 35 anteater 35 Weil 35 creature 35 Roediger 34 loggerhead turtle 34 Stein 34 primate species 34 Great Ape Trust 34 biologists 34 narwhal 34 LaCasse 34 Louthan 34 Cornicelli 34 monkeys 34 velociraptor 34 Bernstein 34 lemur 34 Rosenberg 34 Stehn 34 thylacine 34 hominid 33 Kochevar 33 beagle 33 Woolfson 33 Silverblatt 33 Homo sapiens 33 Weiss 33 Feldman 33 T rex 33 primate 33 orang utan 33 western lowland gorillas 33 orang utans 33 golden retriever 33 bottlenose dolphin 32 mockingbird 32 owl 32 marmosets 32 Hilliker 32 clouded leopard 32 orangutans 32 dolphins 32 macaque monkeys 32 leatherback turtles 32 porcupine 32 monkey 32 Chimpanzee 32 Geiselman 32 Chimpanzees 32 Sheltie 32 housefly 31 Chimp Haven 31 Jaffe 31 marine biologists 31 horseshoe crab 31 marsupial 31 pup 31 baboon 31 lemurs