A supervisor of unorganized towns and gores shall receive in addition to his or her per diem the following fees:
(1) for collecting taxes, he or she shall receive five percent of the amount collected by him or her;
(2) upon the sale of lands of nonresidents, he or she shall receive the same fees as the collector of town taxes in like cases; and
(3) in the performance of his or her duties relating to dogs, he or she shall receive the same fees as town clerks.