For the purpose of discharging the duties imposed by this chapter and to enforce its provisions, the animal control officer is empowered to enter on premises upon which a dog or cat is kept or harbored and to demand the owner to produce the tag or receipt for such dog or cat. It is further provided that the animal control officer may enter the premises where any dog is kept in a reportedly cruel or inhumane manner and demand to examine such dog and take possession of the dog when, in his opinion, the dog requires humane treatment. (2000 Code § 4-162)