Type of dog, slippery creature, grabbed by that lady (6)

I believe the answer is:

heeler

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'type of dog' is the definition.
The definition suggests a singular noun which matches the answer.

'slippery creature grabbed by that lady' is the wordplay.
'slippery creature' becomes 'eel' (I've seen this before).
'grabbed by' is an insertion indicator.
'that lady' becomes 'her' (her refers to a woman).
'eel' going inside 'her' is 'HEELER'.

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I've seen this clue in The Times.

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