Reference for Bava Kamma 81:1
כמאן דקטלה דמי קמ"ל
that the execution amounted to manslaughter on the part of the animal; we are therefore told [that this is not the case]. Raba on the other hand held that [we deal here with a case where] while copulating with a woman the animal did kill her, and as for the objection what difference could be made between killing committed by means of horns and killing committed by means of copulating, [the answer would be that] in the case of Horn the animal purposes to do damage, whereas in this case [of copulating] the intention of the animal is merely for self-gratification. What is the point at issue [between these two explanations]?<span class="x" onmousemove="('comment',' Given by Abaye and Raba respectively. ');"><sup>1</sup></span>