I started reading a 만화 and came across a sentence that looked like this:
오늘 아침도 바압 하고 우는 나초의 보챔으로 눈을 뜹니다.
I understand most of this sentence (talking about how she is waking up to the cries of her cat Nacho). However, I don't understand the usage of "하고" plus "우는". What is this grammatical concept?