First of all, people and things in dreams and even scenes are distorted symbols. Dogs don't really mean that your dog just represents a certain emotion, similar to your feelings for your dog. Maybe it is something you love and cherish, but it's a pity that you have lost it forever. Dreams are a compensation mechanism. Your subconscious is very, very dissatisfied with this loss, but your consciousness is very clear that what you lost is lost forever. Far from coming back, so in this contradiction between consciousness and subconscious, your dream compensates you for bringing this thing back, but this thing is stuck, which means that your consciousness is still active when you sleep, or you have been telling your subconscious that "you can't get it, you can't get it anymore", so the meaning of this dream may be-you miss what you lost very much, which is a very, very big regret in your life. Maybe it's a relative, maybe a friend, maybe love, and of course, it may be this dog, but you know very well that you can't have it anymore-there is something in your heart that can't be put down.