We've noticed that Isabelle makes this little, almost "clicking" sound when she breathes. It doesn't always happen though. I've noticed it when she is panting, sleeping (snoring), of even sometimes when she is just sitting being a good little corgi. Does anyone elses corgi do this, or do we need to take her to the vet? We've noticed it off and on since we got her; it seems as though maybe something between the mouth and nasal passage isn't fully closed at times? Thoughts?