If any dog so seized wears a collar with a metal license
tag attached thereto having inscribed thereon the name and address
of any person, or if the owner or other person keeping or harboring
the dog is otherwise know, the Animal Control Officer or any person
authorized by him shall immediately notify the person whose address
is given on the collar or harness or the person whose name is registered
as the owner by telephone or mail. The notice shall state that the
dog has been seized and will be liable to be offered for adoption
or destroyed if not claimed within seven days after the service of
the notice.