HERDING
Corgis are natural herding dogs some have a stronger drive than others. You can even see this drive as a young pup.
Here are 2 links of a 12 week old rescue pup
http://www.youtube.com/watch?v=z0lMb86sIKE
http://www.youtube.com/watch?v=iciseILnFME
With all of this herding instinct comes a bunch of bad habits such as nipping, barking, and chasing things they should not do.
We do not recommend children and corgis be in a home together. Corgis tend to be nippers so when a child runs and squeals just being a child runs the corgis drive is excited and they begin to see the child as stock and not as a person and will nip even hard enough to break the skin. They become very excited easily leading to barking and other less desireable traits.