The elective ovariohysterectomy (OH) is the most frequent procedures performed in dogs. In this study was used three groups of seven animals each (GI, GII, and GIII) that was undergone to three elective OH techniques: (i) mini-celiotomy ("Snook-hook technique"), (ii) hybrid Natural Orifice Translumenal Endoscopic Surgery (NOTES), and (iii) celiotomy ("conventional surgery"). The surgical techniques were compared considering the surgery time, trans and postoperative complications, technical difficulties, postoperative pain, surgical bleedind and some vital parameters as: heart rate (FC), respiratory rate (f), rectal temperature, invasive blood pressure (PVI) and central venous pressure (PVC). The OH by hybrid vaginal NOTES was the technique with the lowest post-surgical discomfort score and the lowest surgical bleeding, although its surgical time was higher compared to the conventional and the hook (mini-celiotomy) modalities. Key words: castration, laparoscopy, minimally-invasive surgery, canine. A ovariohisterectomia (OH) eletiva em cadelas e o procedimento mais realizado na cirurgia de pequenos animais. No presente trabalho, foram utilizados tres grupos de sete animais (GI, GII e GIII), submetidos a tres tecnicas de OH eletiva: por celiotomia ("tecnica convencional"), por miniceliotomia ("tecnica do gancho de Snook"), via cirurgia endoscopica transluminal por orificios naturais (NOTES) hibrida. Na comparacao, foram considerados o tempo de cirurgia, as complicacoes e dificuldades tecnicas trans e pos-operatorias, a avaliacao de dor pos-operatoria, a quantidade (g) de sangramento cirurgico estimado, alem da determinacao de determinados parametros vitais, como: frequencia cardiaca (FC), frequencia respiratoria (f), temperatura retal, pressao arterial (media) invasiva (PAI) e a pressao venosa central (PVC). A OH via NOTES vaginal hibrida foi a tecnica que apresentou menor escore de desconforto pos-operatorio, menor sangramento cirurgico, porem com maior tempo cirurgico, comparado com as modalidade convencional e por miniceliotomia. Palavras-chave: castracao, laparoscopia, cirurgia minimamente invasiva, canino.