This document provides guidance on how to provide medical care to animals in a shelter or rescue on a limited budget. It discusses legal requirements, intake procedures, spay/neuter protocols, vaccination schedules, common injuries and illnesses seen, and approaches to treatment. For injuries and illnesses, it outlines treatment plans and estimated costs for various case studies. It emphasizes treating all salvageable animals regardless of condition and focusing on quality of life rather than euthanasia. Hospice and palliative care are discussed as options for aging or critically ill pets.