The opening track on Led Zeppelin's fourth album, released as a single in the US and in Australia (5,3)
I believe the answer is:
black dog
(Other definitions for black dog that I've seen before include "Depression - could be a Labrador?" , "Animal representing depression" , "Melancholy, depression" .)
I've seen this clue in The Independent.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.