Shy male with a trained dog (8)
I believe the answer is:
sealyham
'dog' is the definition.
(Sealyham is an example)
'shy male with a trained' is the wordplay.
'with' means one lot of letters go next to another.
'trained' indicates anagramming the letters (train can mean to shape or manipulate).
'shy'+'male'+'a'='shymalea'
'shymalea' with letters rearranged gives 'SEALYHAM'.
(Other definitions for sealyham that I've seen before include "A shy male (anag) - dog" , "Dog that rhymes with ..." , "Hay meals (anag) - kind of terrier" , "Short-legged terrier" , "Wire-haired terrier" .)