Dreams can be rich with symbolism and personal meaning. In your dream, several key elements stand out that can offer insights into your thoughts, feelings, and experiences.

1. Friend with Mixed Heritage: Your friend represents diversity and perhaps reflects your own feelings about identity or belonging. The mixed race aspect could symbolize your awareness of different cultures and experiences.
2. Gun and Violence: The act of stealing a gun and shooting it could signify feelings of power or control. It might also reflect a desire to express your emotions or frustrations in a way that feels impactful. Consider if there are areas in your waking life where you feel a need for more assertiveness or to break free from constraints.
3. Alien-like Animals: The strange creatures you encountered might symbolize the unfamiliar or the unknown in your life. They could represent your fears, anxieties, or even creativity. The peculiar combination of traits in these animals suggests that there may be aspects of yourself or your environment that feel out of place or confusing.
4. Reflection in the Mirror: Seeing yourself as lighter-skinned with dreads may point to your feelings about self-image, identity, or how you perceive yourself versus how others perceive you. The colors in your hair could symbolize different aspects of your personality or the way you want to express yourself.

Overall, your dream seems to explore themes of identity, power, and the unfamiliar. It may be helpful to reflect on your current life situation and how these elements resonate with your feelings or experiences. Consider journaling about your thoughts and emotions surrounding these themes to gain further clarity.