Christian Cooper recorded the encounter with Amy Cooper.
The statement noted that Cooper was charged with falsely reporting an incident in the third degree and that the motion to dismiss the charge was granted by a judge.
Amy Cooper repeated the accusation in a second call to police, adding that the man "tried to assault her".
According to Assistant D.A. Joan Illuzzi. due to Cooper's lack of a criminal background, she was offered an "alternative, restorative justice resolution; designed not just to punish but to educate and promote community healing".
Prosecutors say Amy Cooper completed a therapy course addressing racial bias and asked for her charge to be dropped. Others rushed to the wrong conclusion based on inadequate investigation & they may yet face legal consequences.
The now famous incident erupted when Cooper took her dog to New York's Central Park last May, and a birdwatcher, Christian Cooper (no relation) asked her to follow park rules and put the dog on a leash.
At the time, District Attorney Cyrus Vance said Ms Cooper had "engaged in racist criminal conduct" and said it was "fortunate" that "no one was injured or killed in the police response to Ms Cooper's hoax". "When responding officers arrived, Ms. Cooper admitted that the male had not "tried to assault" or come into contact with her".
Ms Illuzzi-Orbon said Ms Cooper's program, which included five therapy sessions, stressed appreciating racial identities but not using them to cause harm.
Christian Cooper hopes America can change.
"The simple principle is that one can not use the police to threaten another and in this case, in a racially offensive and charged manner. This is how the system was created to function - to protect the privileged from accountability".
In the video posted on social media, Christian Cooper claimed Amy Cooper's cocker spaniel was "tearing through the plantings" in the Ramble, a secluded section of Central Park popular with birdwatchers, and told her she should go to another part of the park. "He's recording me and threatening me and threatening my dog", she told the police operator.
"Please call the cops", said Christian Cooper. Details of the offer were not made public until Tuesday.
Amy Cooper's 911 call inspired NY lawmakers to pass a law making it easier to sue a person who calls police on someone "without reason" due to their background, including race and national origin.