PLOS ONE: Environmental Effects on Compulsive Tail Chasing in Dogs User retractableclause, in the DogCare: a forum on caring for your dog. subreddit, 15 May 2015
PLoS ONE: Environmental Effects on Compulsive Tail Chasing in Dogs User dodo_bird, in the /r/dogs: Woof subreddit, 25 Aug 2012