Jacobs, J. (2021, January 6). Whelping box for your litter – hints and considerations. Dr. Jacobs, DVM, CVC, BSC Veterinarian Chiropractor. Retrieved December 14, 2022, from https://vetchiropractor.com/preparing-for-your-litter-whelping-box-hints-and-considerations/
USDA. (2019). Maternal Stress and Puppy Development. Retrieved June 21, 2023, from https://www.aphis.usda.gov/animal_welfare/downloads/dangerous-animals/ACAids_Canine-MaternalStress_AC-19-005_6.19.pdf
USDA (2019). Early Rearing Environment. Retrieved June 20, 2023, from https://www.aphis.usda.gov/animal_welfare/downloads/dangerous-animals/ACaids_Canine-EarlyRearing_AC-19-006_6.19.pdf