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I'm not sure how far we want to go into the aspect of the dog part vs. the BDSM part so I'm not going to edit it quite yet, however if we wanted to put more into the origin, from what I know the wolf collar ("carlanca") was first worn by the Great Pyrenees or Pyrenean Mastiff; which means the spiked collar originated from Spain, Aragon region if true. Though, it could be have worn by turkish guardian dogs first, seeing as
It's nicknames are Turkisk or Kilim dog collar
Earliest mention of a spiked collar I can find is:
Mellart, J.: Archeology of Ancient Turkey, London 1978
Mellart wrote the next, about the Phyrgians (750- 300 BC)
"... and a graffito on a wall leading to an outdoor lavatory shows that most ferocious of Anatolian animals, the kocabas (big-head)) sheepdog with a spiked collar as a protection against wolfes."
And then there are pictures from 1389 picturing dogs with collars, and other old mentions such as:
"VARRO (116- 27 BC. ?) "De re rustica" II,9,15
"... ne vulnerentur a bestiis, imponuntur his collaria, quae vocantur mellum, id est cingulum circum collum ex corio firmo cum clavulis capitatis."
(In order to scare the wild beasts away, they are armed with ring shaped collars covered with nails)"