When does a cat take her kittens outside?

A mother cat typically takes her kittens outside when they are around 4 to 6 weeks old, after they have started to become more mobile and curious. This is often a gradual process, as she will first introduce them to the outdoors for brief periods, allowing them to explore while ensuring their safety. The experience helps them develop their instincts and social skills. However, the exact timing can vary depending on the mother cat's comfort level and the environment.