Related Clues:
- Dominant species, on a sci-fi planet
- Dian Fossey or Jane Goodall study
- National Zoo houseful
- Animals from those parts to the west
- Some beasts at 20-Across
- Gorillas or chimps
- Drs. Zira and Zaius, e.g
- Caesar and his followers, in a series of films
- Creatures in Darwinian theory
- Many knuckle-walking creatures
- Social climbers?
- Orangutans, gorillas and such
- Burroughs beasts
- Homo sapiens relatives
- Animals appearing in tapestry