No person shall lead, ride or drive, or permit to be led, driven, or ridden, any horse, mule, ass, cow or other beast of draught or burden, upon any sidewalk in said city, provided, however, that this section shall not be construed to prohibit the crossing of any such sidewalk at the usual approach to any lot or alley within the city.
('69 Code, § 13-30) Penalty, see § 10.99