Diet format, protein, amino acids, salt, and osmolytes, as well as water viscosity, affect water consumption in domestic cats: a scoping review of 32 publications (published from 1975 to 2025) on water intake, hydration status, and related health outcomes

Ensuring cats consume sufficient water to maintain their health is a common concern for cat owners. Despite the connection between water intake and animal health, the optimal water intake levels for cats are poorly understood. The present scoping review aimed to determine the extent to which cat hydration research has…