sick white mouse

Answer 1

Over the weekend I got a gray mouse and a white mouse from petco. The first day I had them they were running around thier cage eating and drink. But over the past couple of day the white mouse(female) has been curled up and breathing hard. She does not move around at all and has been in the same spot in her age for 2 days. I have been bringing her food and water to her but nothing is happening. I dont know if her tiny little body is shutting down or if she is sick. My other mouse is fine and running around and eating. I don't know if nature is just taking its course but im worried. Does anyone know what might be wrong? Help would be appreciated.Thxs