majority"> Per Curiam.

Helen Hack and her husband brought this tort action to recover for damages *256 incurred as a result of an assault upon Mrs. Hack by defendants’ dog. Plaintiffs alleged that while Mrs. Hack was walking her miniature schnauzer along Livernois in the city of Detroit, the schnauzer was attacked and killed by defendants’ Doberman pinscher. During the affray Mrs. Hack was knocked to the ground, as a result of which she allegedly suffered an injury to her back. Defendants did not deny the attack on plaintiffs’ dog by their dog, but denied liability for any damages on grounds that they were not negligent. Defendants claimed that their dog broke his leash while being exercised by Thomas Foster, Jr., and that the attack took place before Foster could regain control of his dog. From a jury verdict of no cause of action, plaintiffs appeal as of right.

Plaintiffs rested their case in large part on the fact that defendants’ dog was unleashed, in violation of Detroit City Code, § 7-2-1, and MCL 287.262; MSA 12.512, and requested that the relevant portions of each be read to the jury as part of the court’s charge to the jury. The court read the ordinance, but failed to read the statute. Plaintiffs claim that the trial court’s failure to read the statute was prejudicial error because of the different legal effects of a violation of a statute and a violation of an ordinance: violation of a statute is prima facie evidence of negligence, creating a rebuttable presumption of negligence, while violation of an ordinance is merely evidence of negligence, Zeni v Anderson, 397 Mich 117; 243 NW2d 270 (1976).

We agree that it was error for the trial court to fail to read the statute upon timely request. In this case, however, the error was harmless, because § 7-2-3 of the ordinance, which was read to the jury, provides that a violation is prima facie *257 evidence of negligence, thus giving it the same effect as the statute. 1

Plaintiffs also assign as error the instruction regarding the effect of rebutting evidence on the presumption of negligence raised by violation of the ordinance. After reading the ordinance, the court gave the following instruction:

"Now, the plaintiffs assert that violation of the city ordinance is prima facie evidence of negligence. However, this prima facie presumption of negligence has no weight as evidence. It may establish a prima facie case, but if it is challenged by rebutting evidence, the presumption cannot be weighed against the evidence.” (Emphasis added.)

Plaintiffs’ counsel timely objected to this instruction, protesting that it is not the law in Michigan. We are constrained to agree.

In Zeni v Anderson, supra, the Supreme Court discarded the prior rule that violation of a statute was negligence per se in favor of the rebuttable presumption rule, noting that it was the latter rule which was in fact most often applied in Michigan. The Court in Zeni articulated the rule thus:

"[T]he rule concerning the proper role of a penal statute in a civil action for damages is that violation of the statute which has been found to apply to a particular set of facts establishes only a prima facie case of negligence, a presumption which may be rebutted by a showing on the part of the party violating the statute of an adequate excuse under the facts and circumstances *258 of the case.” Zeni v Anderson, supra, 129-130. (Footnotes omitted. Emphasis added.)

This is the same rule which is incorporated into the Detroit ordinance by § 7-2-3.

The present state of the law in Michigan on rebuttable presumptions was reviewed and clarified in the recent case of Kar v Hogan, 399 Mich 529, 541-542; 251 NW2d 77 (1976):

"The thrust of the Wood [In re Wood Estate, 374 Mich 278; 132 NW2d 35; 5 ALR3d 1 (1965)] case was to change the law in this state concerning the effect that a presumption has after rebuttal evidence has been introduced. Prior to Wood, Michigan held to the "Thayer” or "bubble bursting” approach; that is, the presumption governed only the burden of going forward with evidence and the presumption was totally dissipated if rebuttal evidence was offered. See In re Haskell’s Estate, 283 Mich 513; 278 NW 668 (1938). Wood rejected the "Thayer” approach and adopted the view that once rebuttal evidence was introduced, the presumption, originally a 'mandatory inference’, was reduced to a 'permissible inference’. Unless the defendants’ controverting evidence met the standard for a directed verdict, the presumption, as a 'permissible inference’, was sufficient to get the case before the jury. Wood, supra, 290-291.

"If the trier of fact finds the evidence by the defendant as rebuttal to be equally opposed by the presumption, then the defendant has failed to discharge his duty of producing sufficient rebuttal evidence and the 'mandatory inference’ remains unscathed. This does not mean that the ultimate burden of proof has shifted from plaintiff to defendant, but rather that plaintiff may satisfy the burden of persuasion with the use of the presumption, which remains as substantive evidence, and that the plaintiff will always satisfy the burden of persuasion when the defendant fails to offer sufficient rebuttal evidence.”

*259 The trial court’s instruction in the case at bar utilized the now-discarded "bubble bursting” approach, thus preventing the jury from weighing the presumption against the rebutting evidence. The effect of the presumption arising from the violation of the ordinance and the statute was the crucial issue in the case, and the error in instructing on the law applicable thereto requires reversal.

We have considered plaintiffs’ other claims of error and find them to be without merit.

Reversed and remanded for a new trial. Costs to abide the event.

The parties did not address the question whether a local legislative body may elevate an ordinance to the evidentiary level of a statute merely by including a provision to that effect in the ordinance. Because of the peculiar circumstances presented, the question need not be decided in the case before us. We therefore express no opinion on the issue.

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