Row about Kerry losing its coat. Crufts entrant, perhaps (7)
I believe the answer is:
terrier
'crufts entrant perhaps' is the definition.
(terrier is a breed of dog)
'row about kerry losing its coat' is the wordplay.
'row' becomes 'tier' (a tier is a row of things).
'about' indicates putting letters inside.
'losing its coat' indicates the central letters (the letters that coat the word are removed).
The middle letters of 'kerry' are 'err'.
'tier' enclosing 'err' is 'TERRIER'.
(Other definitions for terrier that I've seen before include "Small, short-bodied dog" , "Short-bodied canine" , "Small, active breed of dog" , "Small, originally burrowing, dog" , "(Yorkshire?) dog" .)