I was bit by my neighbor’s dog, do I have a cause of action against my neighbor?

Yes depending on the facts of the bite. Like any other negligence case, a person that is injured as a result of negligence must show a (1) duty on the part of the dog owner (i.e. that the owner knew or should have know that the dog had a propensity to bite), (2) breach of that duty (i.e. failure to warn, failure to keep the dog caged,or failure to protect those subject to being bitten by the dog), (3) the bite is the actual cause of the injuries sustained and (4) medical damages and/or injuries.