It is the name of a dog character in comic or animation "두치와 뿌꾸" 숲 속에서 우는 뻐꾸기 울음소리를 따서 지은 이름 뿌꾸 is named after a cry of a cuckoo. It commonly used as a name of dog recently. Refer to http://ko.wikipedia.org/wiki/%EB%91%90%EC%B9%98%EC%99%80_%EB%BF%8C%EA%BE%B8 https://mirror.enha.kr/wiki/%EB%BF%8C%EA%BE%B8