Tiny but bold, the chihuahua is read as courage out of proportion to size. It can also stand for nervous energy or a small fear that barks loudly.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.