Urinate.
Yes, all dogs urinate.
when they get the command - sure. That's pretty much the Point of them.
yes! definentaly needed to be trained to go on command and what to do in different situations
Dogs sometimes have urges to urinate where other dogs have...it's nothing unusual
Yes.
The most obvious answer, for me, is that police dogs can respond consistently and quickly to commands. Police dogs also know their chain of command: they are not dominant. Depending on what the police dog has been trained for, they can also detect bombs, drugs, cadavers. These dogs are also trained to apprehend persons (only when told by their handler), and are trained to do so in a way that will not allow for the suspect to sue the handler/police agency.
they don't urinate on their food or drinking water
No, not all police have dogs. There is a K-9 unit for police with dogs though.
Dogs urinate, defecate and respire, these are all forms of excretion.
Dogs urinate, defecate and respire, these are all forms of excretion.
Their bladder tells them "it's time"
no