Characterization of the estrous cycle in Galea spixii (Wagler, 1831) - Santos, Amilton C; Viana, Diego C; Bertassoli, Bruno M; Oliveira, Gleidson Benevides de; Oliveira, Daniela M; Bezerra, Ferdinando Vinicius Fernandes; Oliveira, Moacir F; Assis Neto, Antonio Chaves de (Pesquisa Veterinária Brasileira, 2015)