In dreams, a big dog symbolizes morality, self-restraint, self-demands, and discipline. It represents the dreamer’s inner behavior norms, guidelines, and the guardian of morality, or can be understood as the "conscience" that people talk about playing a role in the subconscious and forming an image in the dream. On the other hand, it symbolizes friendship, indicating loyal love, faithful friendship, or the power of friends.
Dreaming that someone is holding a big dog:
Interpersonal relationships are improving. Your humorous jokes will impress people, and your status in others’ minds will be elevated. You will be busy and happy dealing with public affairs.
Dreaming that you go to someone else’s house and there is a big dog in front:
You may secretly compete with others because of what they say, and you will do many surprising things. You seem very energetic, enthusiastic, and creative these days.