Dogecoin, the English word" dog/Dog"that has become an internet phenomenon, consists of the words Doge (pronounced" Doj "or" Doc") and coin (money).
The Doge in the story is Atsuko Sato, a kindergarten teacher living in Sakuro, Japan, the Shiba Inu dog Kabosu. So the dog face seen on Dogecoin belongs to Kabosu.