This is the 12747th most frequent Korean word.
대형견을
"대형견을" means "large dog" in English.
Here, "대형견을" is the object of "좋아하는" (likes), showing preference towards large dogs.
대형견을 좋아하는 친구가 있어요.
I have a friend who likes large dogs.
"대형견을" acts as the object of "키우는" (raising), establishing the concept of ownership or care for large dogs.
대형견을 키우는 것은 책임이 필요합니다.
Raising large dogs requires responsibility.
In this sentence, "대형견을" refers to large dogs as the object of the verb "산책시키는" (walking), indicating this phrase someone's action of walking large dogs.