Your Pug may be biting due to teething. While most owners do refer to this as biting, this is actually a gnawing in an attempt to sooth the pain and discomfort that a pup will experience when his teeth are growing in and gums are very sensitive and sore.
At this stage in life, a Pug will chew on just about anything that he can get his mouth on. He or she will not care if it is your fingers, your new shoes or electrical cords!
There are several ways to help your Pug dog get through this time without damaging your home and belongings. One element that separates this from the above biting issues is that a puppy should be given an option. When chewing on an un-approved object, that object should be taken away and replaced with a chew toy. If the dog seems to be having a really hard time, ice cubes (plain or flavored) can offer great relief.
In addition, toys chilled in the freezer can take the edge off.
Always praise good chewing habits while discouraging bad ones. And if the Pug pup nips at hands or feet, immediately follow the training previously explained for biting.
In regard to any household items that you absolutely do not need on floor level: remove them or place them high enough so that your dog cannot reach them.
Be sure to cover electrical wires with plastic shielding. Allowing a your Pug dog to have an ice cube will be very helpful. Placing dog toys in the freezer for an hour or two, and then offering them will help.