To dream of a ferret represents you or someone else that is noticing what everyone else is doing before doing anything yourself. Seeing what happens before doing anything serious.
Negatively, a ferret may reflect your suspicion or distrust of others.
Example: A woman dreamed of seeing a ferret. In waking life she wanted to merge families with her new boyfriend by making all the children live under one roof. However, she wasn’t confident about making such a move so soon and wanted to see how the relationship would work out first.