| Swinger in the zoo | 18 |
| Subject for Dian Fossey | 23 |
| Slamang or wou-wou | 18 |
| Simian house resident | 21 |
| Silly way to go | 15 |
| Show no originality | 19 |
| Rue Morgue terror | 17 |
| Rude guest | 10 |
| Rhesus | 6 |
| Research subject for Fossey or Goodall | 38 |
| Rainforest resident | 19 |
| Rainforest inhabitant | 21 |
| Rainforest denizen | 18 |
| Rain-forest dweller | 19 |
| Professor Bobo of "Mystery Science Theater 3000," e.g. | 64 |
| Primatologist's study, perhaps | 34 |
| Primate house resident | 22 |
| Practice monkey-see, monkey-do | 30 |
| Practice "monkey see, monkey do" | 42 |
| Pongo, e.g. | 11 |
| Pongo or wou-wou | 16 |
| Pongo or pongid | 15 |
| Pongo | 5 |
| Pongid or mandrill | 18 |
| Play Simon Says | 15 |
| Play follow-the-leader | 22 |
| Play "Simon says" | 27 |
| Pithecologist's study | 25 |
| Pithecanthropus relative | 24 |
| Person's close cousin? | 26 |
| Orangutan, for example | 22 |
| Orangutan or chimp | 18 |
| Orang, e.g. | 11 |
| One rung on the evolutionary ladder | 35 |
| One of Tarzan's clique | 26 |
| One of George of the Jungle's pals | 38 |
| Nonhuman sign language learner | 30 |
| Nonhuman primate | 16 |
| Neil Sedaka "I Go ___" | 32 |
| Naked or hairy | 14 |
| Moviedom's Kong or Dunston | 30 |
| Morris's "The Naked ___" | 38 |
| Mindlessly mimic | 16 |
| Mighty Joe Young e.g. | 22 |
| Menagerie member | 16 |
| McDowall role: 1968 | 19 |
| Mark Wahlberg foe, in a 2001 remake | 35 |
| Mandrill | 8 |
| Man's relative | 18 |
| Mammal for Hooton's study | 29 |
| Mad about, with "over" | 32 |
| Lug or thug | 11 |
| Lowlands beast | 14 |
| Lemur's kin | 15 |
| Largest arboreal animal, e.g. | 29 |
| Large primate | 13 |
| Lancelot Link e.g. | 19 |
| Kong, e.g. | 10 |
| Koko who signs, e.g. | 20 |
| Koko who communicates through American Sign Language, e.g. | 58 |
| King Kong, for example | 22 |
| King Kong was one | 17 |
| King Kong is one | 16 |
| King Kong | 9 |
| Kind of man, to The Kinks | 25 |
| Kin, to an evolutionist | 23 |
| Kim Hunter played one opposite Charlton Heston | 46 |
| Kala of fiction | 15 |
| Jungle groomer | 14 |
| Jocko | 5 |
| It has long arms | 16 |
| Huxley's "___ and Essence" | 40 |
| Human's hairy cousin | 24 |
| Human's cousin | 18 |
| Human ancestor | 14 |
| How you go when you lose it? | 28 |
| How the excited go | 18 |
| How fans may go | 15 |
| Hominoidea member | 17 |
| Hominoid family member | 22 |
| Hominidae member | 16 |
| Highly excited, in slang | 24 |
| Hanna-Barbera had a grape one | 29 |
| Hand-over-hand swinger | 22 |
| Hallowe'en primate | 22 |
| Hairy primate | 13 |
| Hairy or Naked | 14 |
| Hairy one | 9 |
| Hairy hulk | 10 |
| Hairy hominoid | 14 |
| Hairy critter | 13 |
| Hairy copier | 12 |
| Hairy brute | 11 |
| Hairy ancestor | 14 |
| Great or big follower | 21 |
| Grape ___ (Hanna-Barbera cartoon character) | 43 |
| Gorilla, for example | 20 |
| Goodall subject | 15 |
| Go wild, with "out" | 29 |
| Go __: lose it | 14 |