Pet for Dorset leader in Dorset resort (6)
I believe the answer is:
poodle
'pet' is the definition.
(I know that poodle is a type of dog)
'dorset leader in dorset resort' is the wordplay.
'leader' suggests taking the first letters.
'in' indicates putting letters inside.
'dorset resort' becomes 'poole' (I've seen this before).
The initial letter of 'dorset' is 'd'.
'd' inserted inside 'poole' is 'POODLE'.
'for' is the link.
(Other definitions for poodle that I've seen before include "Lapdog" , "Curly-haired breed of dog" , "5 [MANS BEST FRIEND]" , "National dog of France?" , "Looped around the dog" .)