It probably also depends on whether intelligence is part of the specification for the breed.
Though there's definitely breeders who will forget that for most breeds, the specs where designed to fit a profession, and go nuts aiming at an ideal look while ignoring everything else that is relevant for the job, such as intelligence and good health.

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‘To those who regard “crime fiction” as some sacred icon which must follow a rigid formula, I will always be the man who writes 18-syllable haiku.’Trying to make sense of computers, The Error Log.