Section 164. A person who owns or keeps a dog, and who has received such notice and does not within twenty-four hours kill such dog or thereafter keep it on his premises or under the immediate restraint and control of some person, shall be punished by a fine of not more than twenty-five dollars; and any police officer, constable or dog officer may kill such dog if it is found outside of the enclosure of its owner or keeper and not under his immediate care.