How old was Laika when she died?

Could you please elaborate on the tragic yet significant event surrounding Laika's demise? Specifically, I'm curious to know the exact age at which she passed away. Laika, the courageous canine pioneer of space exploration, embarked on a journey that would forever change the course of human understanding of the cosmos. However, her fate was tragic as she was sent into the vast unknown, never to return. In the pursuit of knowledge and understanding, she bravely faced her fate. Thus, it is with utmost respect and curiosity that I inquire about the age at which she passed away, leaving a lasting impact on the world of space exploration.