law in Michigan--
M.C.L. §287.351 Person bitten by dog; liability of owner.
Person bitten by dog; liability of owner.
(1) If a dog bites a person, without provocation while the person is
on public property, or lawfully on private property, including the property
of the owner of the dog, the owner of the dog shall be liable for any
damages suffered by the person bitten, regardless of the former viciousness
of the dog or the owner's knowledge of such viciousness.
person is lawfully on the private property of the owner of the dog within
the meaning of this act if the person is on the owner's property in
the performance of any duty imposed upon him or her by the laws of this
state or by the laws or postal regulations of the United States, or
if the person is on the owner's property as an invitee or licensee
of the person lawfully in possession of the property unless said person
has gained lawful entry upon the premises for the purpose of an unlawful
or criminal act.
law in Ohio--
§ 955.28. Dog may be killed for certain
acts; owner liable for damages.
(A) Subject to divisions (A)(2) and (3) of section 955.261 [955.26.1]
of the Revised Code, a dog that is chasing or approaching in a menacing
fashion or apparent attitude of attack, that attempts to bite or otherwise
endanger, or that kills or injures a person or a dog that chases, injures,
or kills livestock, poultry, other domestic animal, or other animal,
that is the property of another person, except a cat or another dog,
can be killed at the time of that chasing, approaching, attempt, killing,
or injury. If, in attempting to kill such a dog, a person wounds it,
he is not liable to prosecution under the penal laws which punish cruelty
(B) The owner, keeper, or harborer of a dog is liable in damages for
any injury, death, or loss to person or property that is caused by the
dog, unless the injury, death, or loss was caused to the person or property
of an individual who, at the time, was committing or attempting to commit
a trespass or other criminal offense on the property of the owner, keeper,
or harborer, or was committing or attempting to commit a criminal offense
against any person, or was teasing, tormenting, or abusing the dog on
the owner's, keeper's, or harborer's property.