I've got a Labrador Retriever that makes this special, loud noise when sniffing something that is VERY interesting to her. I joke with her about it and ask her if she'd put the hoover on, but I would like to know what sort of mechanism is involved? Does the noise come from her mouth or her nose/nostrils? I know of few more labradors that sound the same when they get into an intense sniffing mode.
Can anyone explain this for me? Please?
Put the hoover on!
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