anytime my sox or houseshoes are available, my female cat will steal one and stand over it kneading with front and back legs and meowing. she was a wild kitten, about 10 weeks old. which showed up on my porch 3 years ago, seemingly separated from her mom and others. this behavior started when I got her a stuffed teddy bear to play with, and then she acted like she was mating with it, all 4 feet, kneading over it and meowing. i took that away, then any small fuzzy object, mostly sox or fuzzy house shoe, she takes and comes to where I am with the same actions. she was spayed at 6 and a half months before going into heat