A snakebite is traditionally read as a sudden emotional hurt or betrayal, and also as the sharp start of a transformation you did not choose. Because the snake is one of the oldest symbols of renewal, the bite is often taken as change arriving through discomfort. Being bitten by a snake you had been watching is read as a risk you knew about; a bite from one you never saw as a shock from an unexpected direction. Where it bites matters in folk reading: the hand points to something you reached for, the foot to the path you are on. A dream like this describes a feeling of being stung, not something that lies ahead.
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.