Runs around animal shelter - magic (4,4)

I believe the answer is:

dark arts

I'm a little stuck... Click here to teach me more about this clue!

'magic' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'runs around animal shelter' is the wordplay.
'runs' becomes 'darts'.
'around' means one lot of letters goes inside another.
'animal shelter' becomes 'ark' (ship which shelters animals in the Bible).
'darts' going around 'ark' is 'DARK ARTS'.

Can you help me to learn more?

I've seen this clue in The Guardian.

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.