The weasel in dreams indicate the mischievous and devious parts of your personality. Perhaps you are a very sneaky person and not nice to those around you. The dream suggests to change this about yourself. The weasel could also indicate someone in your waking life that has the features of the weasel and you should be careful while being with this person.
Weasel dream meaning
Read more about dreaming of Weasel in other dream meanings interpretations.