Found here
http://pubs.ext.vt.edu/410/410-030/410-030.html
Code of Virginia ß 3.1-796.116. Dogs killing, injuring or chasing livestock or poultry. It shall be the duty of any animal warden or other officer who may find a dog in the act of killing or injuring livestock or poultry to kill such dog forthwith whether such dog bears a tag or not.
Any person finding a dog committing any of the depredations mentioned in this section shall have the right to kill such dog on sight as shall any owner of livestock or his agent finding a dog chasing livestock on land utilized by the livestock when the circumstances show that such chasing is harmful to the livestock. Any court shall have the power to order the animal warden or other officer to kill any dog known to be a confirmed livestock or poultry killer, and any dog killing poultry for the third time shall be considered a confirmed poultry killer. The court, through its contempt powers, may compel the owner, custodian, or harborer of the dog to produce the dog.
Any animal warden or other person who has reason to believe that any dog is killing livestock, or committing any of the depredations mentioned in this section, shall apply to a magistrate of the county, city or town wherein such dog may be, who shall issue a warrant requiring the owner or custodian, if known, to appear before a general district court at a time and place named therein, at which time evidence shall be heard. If it shall appear that the dog is a livestock killer, or has committed any of the depredations mentioned in this section, the district court shall order that the dog be (i) killed immediately by the animal warden or other officer designated by the court or (ii) removed to another state which does not border the Commonwealth and prohibited from returning to the Commonwealth. Any dog ordered removed from the Commonwealth which is later found in the Commonwealth shall be ordered by a court to be killed immediately.
Code of Virginia ß 3.1-796.118. Compensation for livestock and poultry killed by dogs. Any person who has any livestock or poultry killed or injured by any dog not his own shall be entitled to receive as compensation the fair market value of such livestock or poultry not to exceed $400 per animal or $10 per fowl, provided that: (i) the claimant has furnished evidence within sixty days of discovery of the quantity and value of the dead or injured livestock and the reasons the claimant believes that death or injury was caused by a dog; (ii) the animal warden or other officer shall have been notified of the incident within seventy-two hours of its discovery; and (iii) the claimant first has exhausted his legal remedies against the owner, if known, of the dog doing the damage for which compensation under this section is sought. Exhaustion shall mean a judgment against the owner of the dog upon which an execution has been returned unsatisfied.
Local jurisdictions may by ordinance waive the requirements of (ii) or (iii) or both provided that the ordinance adopted requires that the animal warden has conducted an investigation and that his investigation supports the claim. Upon payment under this section the local governing body shall be subrogated to the extent of compensation paid to the right of action to the owner of the livestock or poultry against the owner of the dog and may enforce the same in an appropriate action at law.