A police dog that is out on police patrol.

A police dog is an ordinary dog (owned by the police force) and trained to do specific tasks that aid the police in performing their duties,

The police dog tracks a criminal by scent.

A police dog is a dog first and foremost.

Picked for chertain characteristics in size and temperament, and then trained.

Killing or harming a police dog is a crime.

A police dog is considered a police officer, despite not being human. Therefore by harming a police dog you are effectively harming a police officer in the eyes of the law.

Police dogs are also very expensive to train and maintain. So not only would you be harming a police asset but you would also be angering the national treasury and taxpayers for wasting their money.

Kicking or punching a police dog is a crime, unless the dog attacked for no reason, then it is self defence and acceptable. Otherwise you'll be jailed for harming the police dog.

Killing a police dog, unless in self defence (except where the dog was set upon you by police) will also result in jail.