"Not only do we battle rain, wind, heat, wasps, and birds, one of the cats that roams the airport near the terminal decided to have kittens in the T-33 Shooting Star! If anyone is looking for a kitten, please stop by during museum hours and inquire. This is why we need to build the museum to get our aircraft indoors!!!!"
Source: A little detail from the Hickory Air Nuseum.... who has an aircraft that has become home to a litter of kittens.