Effect of restraint stress on time spent grooming (in seconds) in WKY and BN rats. Values shown are means ± SEMs. For all groups, n = 15–16. Grooming was assessed for 15 minutes, beginning immediately after restraint termination on days 1, 2, 3, 6, and 10. Restraint increased time spent grooming in both rat strains (*p < 0.001 vs. No Restraint). BN rats spent more time grooming overall (+p < 0.001 vs. WKY rats).