To see an armadillo in your dream, represents your need to establish certain boundaries. You may be putting up walls between you and the people who want to know you better. Alternatively, it indicates codependency. You need to be more assertive and no let other step all over you.
Self-protection. Indifference to one's environment. Any other characteristics you think of when you think of an armadillo. Dreaming of this animal can represent:
Having too much of one of these qualities, or that you could benefit by being less this way
Not having enough of one of these qualities, or that you could benefit by being more like this
Someone or something in your real life with whom you associate one of these qualities (an event, situation, threat, etc.)
For more clues, pay attention to what the animal was doing or any particular characteristic that stood out.