What is the life expectancy of rats with mammary tumors?

The life expectancy of rats with mammary tumors can vary depending on the size and aggressiveness of the tumor, as well as the overall health of the rat. In general, untreated mammary tumors in rats can lead to a decreased life expectancy, with some rats surviving only a few months after diagnosis. However, with proper treatment such as surgery or medication, some rats may live longer. It is important to consult with a veterinarian for the best course of action for your rat.