who is primrose everdeen?

She is Katniss's younger sister, 12 years old. She goes by "Prim." Prim is much more innocent and child-like than Katniss, and not just because she lacks the hunting aptitude of her older sister. Katniss makes it her life's priority to protect Prim from the hardness of life, and Prim thus serves as a personification of Katniss's deferred innocence. Prim has a pet goat named Lady, and works sometimes to help their mother with her duties as a healer.

yeah I thought it was a cat to.