Police are investigating after the animal, protected under the Protection of Badgers Act 1992, was found by a walker in Nantglyn, Denbigh, on Wednesday.
A force spokesman said the badger had been nailed to a tree by its feet and was found hanging at a height of about 10ft (3m).
PC Richard Smith, of the Rural Crime Team, said: “We can’t yet confirm the cause of death, but we have submitted the body for a post-mortem.
“Incredibly, badger persecution is still practised in North Wales and we will continue to work with partners in tackling abhorrent incidents such as these.”
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