The dog is bound to be with the Queen (8)
I believe the answer is:
springer
'the dog' is the definition.
(I've seen this before)
'bound to be with the queen' is the wordplay.
'bound' becomes 'spring' (both can mean to leap).
'to be with' says to put letters next to each other.
'the queen' becomes 'ER' (Elizabeth Regina).
'spring'+'er'='SPRINGER'
'is' acts as a link.
(Other definitions for springer that I've seen before include "hound" , "Large spaniel with wavy silky coat" , "Breed of spaniel" , "Game dog" , "A spaniel; stone in arch" .)