Monkey Research
Photo Researchers, Inc.
Rhesus Monkey
Tierbild Okapia
Experimental Monkey
Science Source
Rhesus Macaque, India
B. G. Thomson
Rhesus Macaque, India #2
B. G. Thomson
Rhesus Macaque, India #3
B. G. Thomson
Rhesus Macaque, India #1
B. G. Thomson
Rhesus Macaque
Raul Gonzalez Perez
Primate Fear Testing
Science Source
Rhesus Monkey
Lynn Hoffman
Primate Socialization Research
Science Source
Maternal Deprivation Research
Science Source
Nursery Cages
Science Source
Infant Monkeys At Play
Science Source
Harlow Monkey Experiment
Science Source
Harlow Monkey Experiment #1
Science Source
Animal Research
Science Source
Animal Research #1
Science Source
Maternal Deprivation Research #3
Science Source
Primate Fear Testing #1
Science Source
Maternal Deprivation Research #2
Science Source
Animal Research #2
Science Source
Animal Research
Photo Researchers, Inc.