The article presents an overview of modern veterinary diagnostic software used both in Russia and abroad. The purpose of this study is to formulate the requirements for the diagnostic information system being developed. During the review process, the software, guided by its purpose and functionality, was divided into several groups. The most famous and characteristic examples are presented and described in each group. This review of existing systems made it possible to formulate user requirements more fully and take into account current trends in the field of veterinary medicine accumulated in various information systems when developing the concept of an expert system.

Keywords: expert system, information system, database, diagnostic software

The article considers a formalized data model of a software package for automating the accounting of the activities of an animal care center, which includes two subsystems: "Subsystem of information support for the activities of a shelter for homeless animals" and "Subsystem of automation of accounting for the activities of a hotel for animals". The formalized model allows you to structure the subject area, highlight the main components, their properties and relationships between them (customers, pets, aviaries, booking requests, volunteers, tasks, etc.), which was later used for algorithmization of the solution and software implementation of complex tools on the 1C:Enterprise platform.

Keywords: formalized model, animal shelter, homeless animals, hotel for animals, 1C:Enterprise, automation, activity accounting, animals, software package, information system