A dog falling in a dream means that a bond you rely on is losing its ground. This dream shows how a friend or a protector is no longer a solid place to stand.
The feeling of being let down by a companion or a protector is present here. You may feel the sting of a sudden shift in a relationship that used to be your anchor. I have seen a trusted hand slip from mine in the dark, too. You are already holding the strength to find your feet again.
Standing on a balcony in a dream adds the weight of how others see you to this loss of footing. Because a balcony is a place for the world to watch, the fall suggests that a private struggle with trust is becoming a matter of your public reputation.
For its more general meaning: Dream about a dog
I saw my dog jump out of a building and I desperately crying ran down the stairs to find him barely alive waiting for me so her could see me one last time
Welcome to your journey,
Your dream is considerations, reliance and confrontation. This dream hints that you need to consider a change of environment in order to find happiness. You are relying too much on your social network. You may be unwilling to confront your shadow self.
Dreams are doors; may you find the keys.