Cybernetic tortoise, developed to help with studies on brain function
1950-1952
1950-1952
1950-1953
1915-1925
1951
1970
1912-1922
1931-1940
1937
1953
1950
1901-1950
1965
1931-1940
1940-1955
1953
1956
1945-1955
1944
1958-1963
1959
1953
1913-1914
circa 1961
circa 1950
1952-1962
1927
1944-1954
circa 1955
1930-1960
1950
1915
1950s
circa 1950
1925-1935
1960-1963
1945-1955
1950-1955
1948
1950-1970
circa 1935
1969-1970
1910-1940
1931-1940
circa 1961
circa 1950
1955-1964
1950-1951
1920-1940
1998
1925-1935