Quick response.
Skittishness.
Sensitivity or vulnerability to your environment.
Dreaming of this animal can represent too much or not enough of one of those qualities, or someone or something you associate with the quality or animal.
Consider also the animal’s actions, context, and your feelings about it.
It is also a symbol that represents the capacity to adapt to unknown situations or circumstances. It signals a high level of self esteem and security in the dreamer. [2]
See also: Snake. Symbol of the movement of the unconscious. [5]