Juggler:

. . . I do not eat food that had parents. . .

This would not completely rule out fish from your diet, due to parthenogenesis (a type of asexual reproduction). However, you do go on to suggest that a being's capacity for sexual reproduction is not your real (or only?) reason, given that many plants reproduce in this way. Your real (other) criterion is congitive ability. I am curious if you could explain what you mean by "cognitive being."