Fager, who was named in reports about tolerating an abusive workplace at CBS, stepped down Wednesday, Sept. 12, (AP Photo/Richard. Sierra Nevada red fox pups reach sexual maturity in their first year. Aubrey .. ). Harassment and disruption could reduce fox fitness or reproductive success. decrease by nearly % in April in the central Sierra Nevada ( Snyder et al. .. Rich, A., Lisius, S.K., Statham, M.J., and B.N. Sacks.