American ethologists

American behaviorist (1904–1990)

American zoologist, gorilla researcher (1932–1985)

American biologist, naturalist, and writer (1929–2021)

American psychologist

American doctor of animal science, author, and autism activist

American psychologist (1905–1981)

American psychologist (1920–1997)

American ethologist and behavioral researcher (1917–1995)

American psychologist (1876–1956)

American naturalist

U.S. entomologist, myrmecologist and Harvard professor (1865–1937)

American zoologist and ecologist (1885–1955)

American anthropologist, primatologist, demonology

American married couple; teachers, taxonomists, ethologists, arachnologists, and entomologists

zoologist

American biologist