Carina A. Kaufmann et al. 2017. The Social Behaviour of Neutered Male Dogs Compared to Intact Dogs (Canis lupus familiaris): Video Analyses, Questionnaires and Case Studies. Veterinary  Medicine. 2, 1 (Jan. 2017), 22–27. DOI:https://doi.org/10.17140/VMOJ-2-113.