A shock-absorber insertable between the leash (7) and the collar (8) so as to attenuate the dog's jerks consists of an elastic member (1) of elongated cylindrical shape made of rubber and provided with end members (3), including typically a spring catch (6), for the attachment to the...
https://www.petprofessionalguild.com/chokeandprongcollarpositionstatement Position Statement on the Use of Choke and Prong Collars by the internationalPet Professional Guild. http://www.apbc.org.uk/articles/shockcollars “Shock Collars – The Shocking Truth” from the Association of Pet BehaviourCouns...