Maybe that means you will someday get a horse, or if you already have one mabye you could get another.
Depending on whether the emotions in the dream are positive or negative, the "dog" might represent a problem (something "dogging" the dreamer) or a happy, playful thing or situation. Transforming into a horse represents enlargement, and an increase of power. So if the dream was threatening, it might symbolize a persistent problem that is turning into a much larger issue. But if the dream was happy, peaceful or playful, it could symbolize a good thing, such as a vacation or an opportunity, turning into something really terrific.
You just had a bad dream.
This could mean several different things. The dog might represent the dreamer and express the dreamer's wish to attack someone (or something.) Alternatively, the dog could symbolize an issue or situation that feels threatening to the dreamer, who is represented by the other person in the dream.
Generally speaking, this dream might be about an irritating person who keeps "snapping" at you; that is, someone who keeps making angry remarks or sharp criticism.
that you have a very vicious dog
There is not enough information to provide a meaningful response. If the question refers to dreaming about someone, it could mean any number of things depending on the identity of the "someone" as well as what happens in the dream. If the question refers to having the same dream as someone else, it generally means that the two dreams dealt with a similar subject, such as a black dog. Closer inspection almost always reveals many differences in the two dreams. In the example, one dream might have shown the black dog running through a park while the other dream pictured the dog tap dancing.
It could mean you are insecure and need some-one to protect you, but you don't trust them not to put you in danger. but remember, not all dreams have meaning, some are what they seem, mixed-up nonsense. they have a purpose that is not open to meaningful interpretation.
It means nothing. It just means that in your dream the world exploded.
bad luck
Your dog represents someone or something that is very familiar and ordinary. The white tiger, by contrast, is both exotic and dangerous, perhaps with a superficial aura of sentimentality or glamor. The dream is telling you that you are being protected by something/someone ordinary and familiar from a glamorous danger that has fooled you into thinking it is harmless.
that you are a cat person
it means your gonna die
You Want A Hotdog :D