Chapter 5! With a focus on the prohibition against slaughtering an animal and its offspring on the same day, and with a new mishnah. The mishnah goes through the variables of whether the animal is consecrated and the location of slaughtering, but once the offspring is also slaughtered on the same day, it’s going to involve lashes for violating the halakhah. Plus, the sages open the question as to whether this is the mother and her offspring only, or also a father and his offspring (and clearly it is the case for male and female offspring, regardless of the above question). And the answer depends on the language in the verse about this case — and comes to include both male and female animal parents .