1. American Kennel Club, (2019). The top-rated dog collars & leashes. Available from:https://www.akc.org/expert-advice/training/the-best-collars-and-leashes-for-puppies-and-dogs/(Accessed October 8, 2019).
2. AVSAB, (2007a). Position statements and handouts (for the public). https://avsab.org/resources/position-statements/(Accessed 28 May 2018).
3. AVSAB, (2007b). AVSAB position statement: The use of punishment for behavior modification in animals. https://avsab.org/wp-content/uploads/2018/03/Punishment_Position_Statement-download_-_10-6-14.pdf(Accessed 6 March 2018).
4. Barrington, K. (2017). The best dog collars you can buy. http://www.businessinsider.com/best-dog-collar/%23the-best-dog-collar-overall-1(Accessed 22 May 2018).
5. Skin blood flow in seated geriatric patients;Bennet;Archives of Physical Medicine and Rehabilitation,1981