Kind of terrier, including very English dog (9)
I believe the answer is:
retriever
'dog' is the definition.
(retriever is a kind of dog)
'kind of terrier including very english' is the wordplay.
'kind of' indicates an anagram.
'including' indicates putting letters inside.
'very' becomes 'v' (abbreviation).
'english' becomes 'e' (abbreviation).
'terrier' anagrammed gives 'retrier'.
'v'+'e'='ve'
'retrier' enclosing 've' is 'RETRIEVER'.
(Other definitions for retriever that I've seen before include "Dog that fetches for its master" , "Gun dog" , "someone to set the situation right?" , "He rescues" , "He brings back" .)