I just got back from the Association of Professional Dog Trainers conference, where one of the seminars I presented centered on the lesser known aspects of canine body language. Among other things, I discussed a study from Bari University in Italy about tail wagging.
The study involved 30 mixed breed dogs between the ages of one and six. There were 15 intact males and 15 non-oestrus females. These were family pets, by the way, whose owners had agreed to participate. The dogs were put into narrow box-like structures with cameras that would track not only which direction their tail wagged, but the precise amplitude. There was a slat at the front of the box through which the dog could see out. (Imagine one of those movies where the character knocks on a door in a seedy neighborhood and the doorkeeper slides the slat open to ask for the password.)
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