A person who finds an estray and knows who owns it shall notify the owner within seven days after finding the estray and request the owner to pay all reasonable charges and take such estray away. A finder who does not know who owns the estray shall within ten days file a notice with the town clerk. The clerk shall transmit a copy thereof to the county recorder, who shall record the same in a book designated "estray book." The finder shall give posted notice of the finding of the estray in said town. The notice shall briefly describe the estray, giving its marks, natural and artificial, as nearly as practicable, naming the residence of the finder, and specifying the town, section, and time when taken up. For failure to give such notice, the finder shall be liable to the owner of the estray in double the amount of damages sustained by the owner thereby.