Translation of "짝짓기가" in English

‎그래서 짝짓기가 시작되자 ‎설레기도 했지만

So while I was very excited that this mating was beginning,

‎짝짓기가 끝나고 ‎암컷은 알을 낳기 위해 ‎땅속으로 향합니다

Mating over, she now heads underground to lay her eggs...

‎그런데 두 마리 모두 ‎아주 느긋하더라고요 ‎그래서 짝짓기가 ‎시작되리라는 걸 알았죠

And then seeing that both animals are pretty relaxed and realizing, "Okay, and then the mating is beginning."