RE: holy hamburger meat batman
Silverock,
Most farm liability policies cover livestock damage to others' property.
If you do not know the owner, you should contact the police and ask that they assist. If you do something that causes the livestock to do damage or injury to another party (an auto accident, for example) you will be added to the liability chain. That is not a good position for you to be in, since you are probably not covered by insurance.