Ohio Rev. Code Ann. § 955.11
(A) As used in this section:
(1)
(a) "Dangerous dog" means a dog that, without provocation, and subject to division (A)(1)(b) of this section, has done any of the following:
(3)
(5) "Serious injury" means any of the following:
(6)
(b) "Vicious dog" does not include either of the following:
(D) Within ten days after the transfer of ownership or possession of any dog, if the seller or other transferor of the dog has knowledge that the dog is a dangerous dog, the seller or other transferor shall give to the buyer or other transferee, the board of health for the district in which the buyer or other transferee resides, and the dog warden of the county in which the buyer or other transferee resides, a completed copy of a written form on which the seller shall furnish the following information: