Painless treatment for animals (8)

I believe the answer is:

spaniels

'animals' is the definition.
The answer is an example.

'painless treatment' is the wordplay.
'treatment' indicates anagramming the letters (letters treated or processed differently).
'painless' anagrammed gives 'SPANIELS'.

'for' is the link.

(Another definition for spaniels that I've seen is " The dogs can be oddly painless".)

I've seen this clue in The Globe and Mail.

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