Boy, 5, raised with chimp in sick study 'started grunting and biting' before tragic end
It is almost 93 years since the experiment was abruptly terminated in the early part of 1932 - and below we take a closer ...
Crying boy pictured being raised with chimp in sick 'experiment' with tragic ending
Chilling photographs show inside a disturbing experiment involving a litlte boy and his "sister" chimp who were spun on ...