1. *Aleccia J. Steep vet bills, sour economy doom more pets. http://www.nbcnews.com/id/29795942/ns/health-pet_health/t/steep-vet-bills-sour-economy-doom-more-pets/#.XtImm5lS_mE (accessed 4 June 2020). NBCNEWS.com, Washington DC, USA, 2009
2. *Anonymous. Over 600,000 pet owners have pet insurance. http://www.roymorgan.com/findings/7615-over-600000-pet-owners-have-pet-insurance-201806080622 (accessed 1 December 2020). Roy Morgan Research Ltd, Melbourne, Australia, 2018
3. *Anonymous. Pets in Australia: a national survey of pets and people. https://animalmedicinesaustralia.org.au/wp-content/uploads/2019/10/ANIM001-Pet-Survey-Report19_v1.7_WEB_high-res.pdf (accessed 4 June 2020). Animal Medicines Australia Pty Ltd, Barton, ACT, Australia, 2019
4. On estimating binomial response relations
5. Survey of the frequency and perceived stressfulness of ethical dilemmas encountered in UK veterinary practice