Bella is a little afraid of other dogs when they bark at her. As a matter of fact, see thread here that I started yesterday:

http://petoftheday.com/talk/showthre...threadid=58823

When my daughter lived at her last house there were two little scotties (she towers over them) who lived next door and they would bark at her as we'd come up the driveway and her tail would go down.

Ripley doesn't seem to be afraid of anything. I don't think he has ever seen himself in a mirror because he acts like he is 100 lbs.