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.
Composition of enrichment categories. Respondents (n = 1098) reported the types of enrichments used with the animal type they worked with most. For analysis, these enrichments were grouped into 5 main categories. * Asked for all species other than rats. ^ Asked only for rats.
