That depends on the owner; a collar might be better if you are training your pug, but if you are just for a leisure walk around the block a harness will be fine. Just make sure that the harness is properly fitted, because if it is to loose or too tight, it can cause sores.
on the harnesses
Yes there are collars that light up but I`m not sure if they beep. Yes several types but none that bleep. You can get illuminated dog collars, led dog collars, and reflective dog collars and lighted dog collars such as a Puplight. These days too, reflective dog harnesses and lit dog harrnesses are a good option, being far more visible as they cover more of a dog's body.
Dog harnesses are sometimes used in place of a normal collar and lead where a dog pulls and might otherwise damage its neck. These harnesses are also useful in dogs that have a relatively small head and might slip their collars. Examples of leather dog harnesses can be found on the petsinpyjamas website.
On the horse or the person? We use saddles on the horse, but they are not harnesses. On the person, there is not any harness.
Choke collars are for hunting dogs & working dogs. Those dogs need those collars to behaive.
dog soap
Use a wet washcloth.
Yes, in the 1800's pugs used to use their dewclaws to climb trees to hide from predators
The type of collars that Innotek sells would be classified as "no-bark collars". They have very innovative collar products that some dog owners use to help train their dogs.
Why is pugs what.
Collars which prevent dogs from barking include ultrasonic collars and training collars. The first creates a high pitch sound which distracts and ultimately deters the dog from barking and the second may use electrical stimulations used to train the dog not to bark.
No, pugs are dogs.