Behavioral Observations of an Infant Squirrel Monkey

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Abstract
The behavioral development and social relations of one infant squirrel monkey were observed in a small caged group of 5 animals. Description is based on 108 hr. of observation over the first 28 wk. of his life. During his first 12 days, the infant either rode on his mother's back or nursed. On the thirteenth day he began to leave her, becoming more independent during the next 5 wk. After 7 wk. he returned to his mother only to nurse or when frightened After Week 21 he was free from bodily contact with his mother at least 95% of the time. The infant first ate monkey chow at 7 wk. of age and regularly are it at 9 wk. Some maternal rejection appeared at 3 wk. and was strong by 16 wk. He still nursed at 28 wk. Incidental interaction among adults was described.