FIGURE 2.
Infancy, pre-weaning: Average Rate (min/hr) of cradling from the mother (a), coo vocalizations (b), harassment (c), and frequency (d) and duration (e) of kidnapping from other animals. All other abbreviations are the same as in Figure 1.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.