You can download BSAVA Manual of Canine and Feline Shelter Medicine Principles of Health and Welfare in a Multi-animal Environment by Rachel Dean, Margaret Roberts and Jenny Stavisky free in pdf format.
This brand new manual provides a practical guide on how to deal with various clinical situations that arise when working with cats and dogs in a shelter environment. The first part of the manual describes the principles of shelter medicine and population health. The second part covers the prevention, management and control of disease in a shelter environment. The final part provides information on working with people in the shelter environment.