Disappear - as may dog and its owner? (2,7)

I believe the answer is:

go walkies

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

'disappear' is the definition.
(I've seen this before)

I don't understand how the remainder of the clue works.

(Other definitions for go walkies that I've seen before include "as may one man and his dog?" , "Appear stolen or lost?" , "Be missing (or stolen)" , "Disappear" , "Become missing" .)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app