BML Birthday Quiz 2018, Part 2 by BringMoreLegos

Question 6

PLUS C'EST LA MEME CHOSE: On April 1, 2017, a popular Instagram account posted a video with the following caption: “Kabosu is OK, she is alive! I don care that somebody told the lie that Kabosu is dead for April Fools day, but one important thing for me is ‘ Kabosu is a girl’, she is a female dog.” Kabosu is best known to the world by what four-letter noun (notably, not an adverb)?