Later that morning, we were in another room and my FIL was on the phone. My dachsie couldn't see him, but she heard him, and at the sound of his voice she began to growl deeply and menacingly, slowly 'rolling' the growls in her throat as if she were savoring them. I've never heard her growl like that since.
Needless to say, the visit was cut short. But before we left, my FIL , who felt remorseful over frightening a Small Cute Dog who weighs less than 10lbs, tried to make friends with her. She jerked her head away when he tried to pet her, and she refused to show him any attention at all. She just gazed stonily off into space.
This was in 1996.
In 2001, my inlaws came to see us. When my little dachsie saw there were visitors, she ran out , tail up, ears flopping, excited and happy at the prospect of fresh worshippers to pay her homage.
Then the wind changed direction.
As soon as she realized it was the FIL coming towards her, she slammed on the brakes, barked and growled at him a few times, then turned around and stalked back into the house, where she hid under the bed.
I wouldn't have believed it if I hadn't seen it myself : A fat little dog holding a grudge for over 5 years.