Dog with dog's head in a Dorset resort (6)
I believe the answer is:
poodle
'dog' is the definition.
(breed of dog)
'dog's head in a dorset resort' is the wordplay.
'head' suggests taking the first letters.
'in' indicates putting letters inside.
'a dorset resort' becomes 'poole' (I've seen this before).
The initial letter of 'dogs' is 'd'.
'd' placed into 'poole' is 'POODLE'.
'with' acts as a link.
(Other definitions for poodle that I've seen before include "Looped around the dog" , "5 [MANS BEST FRIEND]" , "Woofing" , "Pet dog with clipped curly hair" , "Pet dog - lackey" .)