"Awww a raven in its natural habitat with a pet goth", another said on Twitter.
"Obviously they're there to give you a quest."
Questions were raised over how the raven was allowed on the subway in the first place.
It is not known what country the incident took place.
Since the image was posted to Twitter, the hashtag #gothgoals has been created, with a number people commenting that this woman has taken her dedication to the "goth life" to the next level.
The goth subculture is a contemporary group of people within a culture who adopt fashion elements such as black clothing, dyed black hair, dark eyeliner, black fingernails and black period-styled clothing and a focus on gothic rock and a range of other music genres.
The subculture, which is found in many countries in the 2010s, began in England during the early 1980s in the gothic rock scene, an offshoot of the post-punk genre.
The raven and its connection with the gothic subculture originates from Gothic literature.