What If There Was a “Beware of Dog” Sign at the Property?

Dog owners with signs often think the warning protects them. Michigan courts have repeatedly said it does not.

A ‘Beware of Dog’ warning sign posted on a Michigan property

The Short Answer

A “Beware of Dog” sign does not eliminate the owner’s strict liability under MCL 287.351. Michigan courts have consistently rejected the argument that posting a sign somehow shifts the risk to the victim. The sign may be evidence that the owner KNEW the dog was dangerous — which actually helps your case, not the owner’s. The strict liability statute applies whether a sign exists or not.

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The Detailed Answer

Many Michigan homeowners post “Beware of Dog” signs hoping to legally shield themselves if the dog bites. The thinking goes: “I warned them — it’s their fault for coming in anyway.” Insurance defense attorneys sometimes try to make this argument formally. Michigan courts have not been receptive.

What the sign legally accomplishes (almost nothing)

A “Beware of Dog” sign serves two limited purposes under Michigan law:

It puts visitors on notice that a dog is present — but this doesn’t waive any of their legal rights
It may bear on whether someone was lawfully present — though rarely as a defense, since most visitors (mail carriers, delivery workers, invited guests) remain lawfully present regardless

What the sign does NOT do:

Eliminate strict liability under MCL 287.351
Constitute legal “assumption of risk” by the victim
Waive any rights of mail carriers, delivery drivers, utility workers, or invited guests
Function as a contract releasing the owner from liability

Why the sign can actually hurt the dog owner

Posting a “Beware of Dog” sign is often cited by plaintiff’s attorneys as evidence of the owner’s prior knowledge that the dog was dangerous. The owner essentially admits in writing: “I have a dog people should beware of.” This admission can support:

A common-law negligence claim alongside the strict liability claim
Punitive damage arguments in extreme cases
A “dangerous dog” determination by animal control (see our dangerous dog laws guide)

The narrow exception: warning combined with explicit refusal

In rare cases, signage combined with explicit verbal warnings to a non-essential visitor might reduce the visitor’s “lawfully present” status. For example: a homeowner with a “Beware of Dog” sign tells an uninvited person “do not enter, my dog will bite you” — and the person enters anyway and is bitten. This is the closest scenario where signage matters legally. Even here, Michigan courts apply the strict liability statute generously in favor of victims.

What This Means for Your Case

Don’t let a “Beware of Dog” sign at the bite location dissuade you from pursuing a claim. The sign does not eliminate the owner’s liability — and may actually strengthen your case by establishing prior knowledge. Document the sign in your photos as evidence, then proceed with the claim under MCL 287.351.

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