Proschowsky, H.F.; H. Rugbjerg; A.K. Ersbell (2003). «Mortality of purebred and mixed-breed dogs in Denmark». Preventive Veterinary Medicine58 (#1–2): 63–74. doi:10.1016/S0167-5877(03)00010-2. PMID12628771.
Michell AR (1999). «Longevity of British breeds of dog and its relationships with sex, size, cardiovascular variables and disease». The Veterinary Record145 (#22): 625–629. doi:10.1136/vr.145.22.625. PMID10619607.
«Comparative longevity of pet dogs and humans: implications for gerontology research». The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences52 (#3): B171–178. 1997. doi:10.1093/gerona/52A.3.B171. PMID9158552.
Finlay, Fiona. «Chocolate poisoning». BMJ Publishing Group Ltd. Ανακτήθηκε στις 4 Φεβρουαρίου 2011.
Proschowsky, H.F.; H. Rugbjerg; A.K. Ersbell (2003). «Mortality of purebred and mixed-breed dogs in Denmark». Preventive Veterinary Medicine58 (#1–2): 63–74. doi:10.1016/S0167-5877(03)00010-2. PMID12628771.
Michell AR (1999). «Longevity of British breeds of dog and its relationships with sex, size, cardiovascular variables and disease». The Veterinary Record145 (#22): 625–629. doi:10.1136/vr.145.22.625. PMID10619607.
«Comparative longevity of pet dogs and humans: implications for gerontology research». The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences52 (#3): B171–178. 1997. doi:10.1093/gerona/52A.3.B171. PMID9158552.