Dear all, We are pleased to inform that the following article was published in Zoologia Parental care behavior in the Guiana dolphin, *Sotalia guianensis* (Cetacea: Delphinidae), in Ilha Grande Bay, southeastern Brazil. Parental care is any form of parental behavior that increases offspring fitness. To the authors' knowledge, this study is the first to analyze the intensity of parental care in the Guiana dolphin, *Sotalia guianensis* (van Bénéden, 1864). The objectives of this study are as follows: 1) to quantify the degree of parental care in *S. guianensis* in Ilha Grande Bay, Rio de Janeiro; 2) to investigate the influence of behavioral state and group size on the degree of parental care; and 3) to evaluate the differences between the intensity of parental care provided to calves and juveniles. Our results indicate that the intensity of parental care is high in *S. guianensis* and that care is more intense in larger groups. It is possible that these differences serve to maximize hydrodynamic gains and to minimize risks. Our results suggest that parental care is more intense during travel. A possible reason for this greater intensity is that the feeding dynamics show a more random pattern than other behavioral states. Moreover, the results indicate that calves receive more intense care than juveniles. These results suggest that parent-offspring conflict is possible in the study population. For copies, please contact me: rhtardin@gmail.com or obtain at the Zoologia website: http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1984-46702013000100... Sincerely, -- Rodrigo Tardin Doutorando em Ecologia e Conservação - IBRAG - UERJ Mestre em Biologia Animal - PPGBA - UFRRJ Especialista em Docência do Ensino Superior - IAVM Laboratório de Bioacústica e Ecologia de Cetáceos - UFRRJ/ IF/ DCA