Thanks @PugLove888 but I think I have to elucidate somethings. The foxes that ran into my sims house were not having a high friendship status with any of my Sims. The maximum friendship was approximately 25%. So, they were not further than the level of acquaintances. Therefore, it leads me to suggest that it is intentional. In the region where I live there is the story of the fox Reynaerde!. It is a cunning and cheeky fox and the foxes that I see in the game are very much alike this character. The one thing I am not sure about is if a fully unknown fox will do the same. I have to wait and see. But I will keep you posted. 😎
@xochiquetzl_xkvn I am not sure if you saw the stream prior to the release of Cottage Living, but there was a short fragment in which a fox also caught a bunny. It was gruesome but definitely ment to be part of the game as the makers explained. It didn't happen to me before because I equipped my hen house with the upgrade which provides a repelling anti fox alarm which keeps away the foxes from my Sims backyard. It would be nice though, to have such an alarm separately available and fit it to the front of the farmhouse.
Have fun playing. 😉