My cat Roxy likes to chase our lion head Carmel sometimes. Carmel runs with her ears up, and not as fast as she can, until she gets near her cage, then turns around. At this point, Roxy stops dead in her tracks, and runs away as soon as Carmel moves. I've read that a rabbit running with its ears up instead of laid back isn't really scared, and at least some rabbits like to play chase/tag. Is this true?