Whereas the blood delivers oxygen and nutrients to the cells, the lymph is responsible for removing waste products from the cells as well as dealing with infections. (drvitaminsolutions.com)
The kidneys are responsible for removing waste products from the bloodstream. (youngagainpetfood.com)
Once the kidneys no longer effectively remove waste products efficiently, a cat will compensate by drinking more water, thus producing more urine. (youngagainpetfood.com)