Dreams involving animals can often reflect our instincts, emotions, or aspects of ourselves. In your dream, the lizard may symbolize something that feels elusive or difficult to catch in your waking life, perhaps a situation or a personal trait you are trying to understand or control. The act of catching it signifies your ability to face and confront whatever this represents.
When the lizard transforms into a dog upon being thrown into the street, it suggests a change in perception or suggests that what you initially saw as a challenge or an obstacle (the lizard) can transform into something more familiar or loyal (the dog). Dogs often represent companionship, loyalty, and protection. This transformation could symbolize a shift in your perspective on a problem or a realization that what seemed threatening or unmanageable may actually hold potential for loyalty or support.
Consider what is happening in your life that may relate to feelings of control, change, or transformation. Reflect on whether there are aspects of yourself or your environment that you need to confront, and how those elements might actually lead to a more positive outcome than you initially expected.