Sissy and Hooite will be two years old in March and my husband and I have had them since they were 7-8 weeks old. I know for a fact that they weren't abused as kittens in their previous home. They startle and scatter at sudden loud noises in the house, for example if they are playing and knock the kitchen broom over they freak out and take off with their tails poofed. Sometimes they startle at loud noises outside or if someone comes to the door. The only thing I can think of is that they are very close to me and I suffer from anxiety so maybe they picked up on that nervousness and it became a personality trait.