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Spain, C. Victor; Scarlett, Janet M.; Houpt, Katherine A. (1 Şubat 2004). "Long-term risks and benefits of early-age gonadectomy in cats". Journal of the American Veterinary Medical Association. 224 (3): 372-379. doi:10.2460/javma.2004.224.372. PMID14765796.
Howe, Lisa M.; Slater, Margaret R.; Boothe, Harry W.; Hobson, H. Phil; Holcom, Jennifer L.; Spann, Angela C. (2001). "Long-term outcome of gonadectomy performed at an early age or traditional age in dogs". Journal of the American Veterinary Medical Association. 218 (2): 217-21. CiteSeerX10.1.1.204.173 $2. doi:10.2460/javma.2001.218.217. PMID11195826.
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Duerr; Duncan, C. G.; Savicky, R. S.; Park, R. D.; Egger, E. L.; Palmer, R. H. (2007). "Risk factors for excessive tibial plateau angle in large-breed dogs with cranial cruciate ligament disease". Journal of the American Veterinary Medical Association. 231 (11): 1688-91. doi:10.2460/javma.231.11.1688. PMID18052804.
Colliard L.; Paragon B. M.; Lemuet B.; Bénet J. J.; Blanchard G. (February 2009). "Prevalence and risk factors of obesity in an urban population of healthy cats". Journal of Feline Medicine and Surgery. 11 (2): 135-40. doi:10.1016/j.jfms.2008.07.002. PMID18774325.
Cave N. J.; Backus R. C.; Marks S. L.; Klasing K. C. (October 2007). "Oestradiol, but not genistein, inhibits the rise in food intake following gonadectomy in cats, but genistein is associated with an increase in lean body mass". Journal of Animal Physiology and Animal Nutrition. 91 (9–10): 400-10. doi:10.1111/j.1439-0396.2006.00667.x. PMID17845247.
McGreevy P. D.; Thomson P. C.; Pride C.; Fawcett A.; Grassi T.; Jones B. (May 2005). "Prevalence of obesity in dogs examined by Australian veterinary practices and the risk factors involved". Veterinary Record. 156 (22): 695-702. doi:10.1136/vr.156.22.695. PMID15923551.
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Sorenmo, K. U.; Goldschmidt, M.; Shofer, F.; Goldkamp, C.; Ferracone, J. (2003). "Immunohistochemical characterization of canine prostatic carcinoma and correlation with castration status and castration time". Veterinary and Comparative Oncology. 1 (1): 48-56. doi:10.1046/j.1476-5829.2003.00007.x. PMID19379330.
Lekcharoensuk; Osborne, C. A.; Lulich, J. P. (2001). "Epidemiologic study of risk factors for lower urinary tract diseases in cats". Journal of the American Veterinary Medical Association. 218 (9): 1429-35. doi:10.2460/javma.2001.218.1429. PMID11345305.
Aaron, A.; Eggleton, K.; Power, C.; Holt, P. E. (1996). "Urethral sphincter mechanism incompetence in male dogs: a retrospective analysis of 54 cases". Veterinary Record. 139 (22): 542-6. doi:10.1136/vr.139.22.542. PMID8961524.
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Howe, Lisa M.; Slater, Margaret R.; Boothe, Harry W.; Hobson, H. Phil; Holcom, Jennifer L.; Spann, Angela C. (2001). "Long-term outcome of gonadectomy performed at an early age or traditional age in dogs". Journal of the American Veterinary Medical Association. 218 (2): 217-21. CiteSeerX10.1.1.204.173 $2. doi:10.2460/javma.2001.218.217. PMID11195826.
Gobello, C. (23 Ağustos 2001). "Canine Pseudopregnancy: A Review"(PDF). IVIS.org. International Veterinary Information Service. 19 Nisan 2011 tarihinde kaynağından(PDF) arşivlendi. Erişim tarihi: 13 Nisan 2010.