Clue: Relation of terrier vet treated, wasting time (9)
Answer: RETRIEVER
Explanation: Relation of terrier vet treated, wasting time (9)
***(errier vet) **where ERRIER is (t)ERRIER *wasting* T (time)** **I don't like this clue as "terrier" cannot be part of the anagram fodder and part of the definition.