References: 1. Barsanti J.A. and Finco D.R. Canine Prostatic Diseases. In: Textbook of Veterinary Internal Medicine, 4th edn, ed. S Ettinger and E Feldman, 2005. - pp. 1662-1685. WB Saunders, Philadelphia. 2. Behrend E.N., Grauer G.F., Mani I., Groman R.P. and Greco D.S. Hospital- acquired acute renal failure in dogs: 29 cases. Journal of the American Veterinary Medical Association 2008. – p. 537-541. 1. Chew D.J., DiBartola S.P., eds., p. 29. Wilmington, NC: The Gloyd Group. Clanciolo RE, Bischoff K. Ebel JG. Van Winkle TJ, Goldstein RE, Serfi lippi LM. Clinicopathologic, histologic, and toxicologic fi ndings in 70 cats inadvertently exposed to petfood contaminated with melamine and cyanuric acid. Journal of the American Veterinary Association. 2008. - 233 (5): 729 – 37. 2. Eric Monnet. Portosystemic shunts in dog and cats. College of Veterinary Medicine and Biomedical Sciences Colorado State University, Conference NAVC 2011, p.1422- 1425 3. Houston, D.M. Predisposition of different breeds to urolithiasis / D.M. Houston, A.-M. Germain // FOCUS. – 2018. - №9. – S. 46- 48. 4. Jacob F., Polzin D.J., Osborne C.A. et al. Evaluation of the association between initial proteinuria and morbidity rate or death in dogs with naturally occurring chronic renal failure. Journal of the American Veterinary Medical Association. 2005. – p. 393-400 5. Peryshkina, L.S. Comparative characteristics of classical cystotomy and laparoscopically assisted cystoscopy in rabbits. /L.S. Peryshkina, S.V. Pozyabin // Scientific notes of the Kazan State Academy of Veterinary Medicine named after N.E. Bauman, 2019.-T.237.- P. 142-147. 6. Pozyabin, S.V. Methodology of laparotomy assisted cystoscopy in dogs. / S.V. Pozyabin, L.S. Peryshkina // Veterinary, zootechnics and biotechnology. 2017. - No10 - S.6-10. 7. Prober L.G., Johnson C.A., Olivier N.B., Thomas J.S. Effect of semen in urine specimens on urine protein concentration determined by means of dipstick analysis. American Journal of Veterinary Research. 2010. - 71: 288 – 92. 8. Stager, I.V. Frequency of occurrence and clinical manifestation of urolithiasis in domestic animals of the Republic of Khakassia. / I. V. Stager // Mezhdunarodnaya- issledovatel'nyi zhurnal. - 2017. №12 (66). S. 44-47.

Аbstract In the pancake and far foreign scientific literature, works devoted to the diagnosis and methods of treatment of animals with pathologies of the urinary system in animals are widely represented.