Dog in cable host's opening show (8)

I believe the answer is:

wirehair

'dog' is the definition.
(wirehair is a kind of dog)

'cable host's opening show' is the wordplay.
'cable' becomes 'wire' (synonyms).
'opening' says to take the initial letters.
'show' becomes 'air' (both can mean broadcast).
The first letter of 'hosts' is 'h'.
'wire'+'h'+'air'='WIREHAIR'

'in' acts as a link.

I've seen this clue in The Guardian.

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