Who / What is the dog barking at? The reason you ask this question is are they excited about visitors coming or they guarding because there is something unknown to them in the yard. Is there an intruder at night but maybe it's just bear in the yard? Are they scared because you are leaving?
How does the barking sound? This is an important question as there are 5 to 6 different types of barking and they do have different types of sounds. Identifying how they sound, helps to identify what type of barking it is and how to address helping to manage your dogs barking.
Where is the dog when barking? Are they by the window? In their crate? By the door? What is the vicinity?
What is he/she doing while barking? Are they jumping around like they are excited? Are they shaking like they are scared? Are they alert? Are they hiding? Are they running backing and forth with their tale between their legs?
How long does the barking last? Is it a brief bark or consistent? Is it for 20 seconds, 30 seconds, 3 minutes?
Another very important question is how much rest are they getting? 8 hours? 18 hours? Adult dogs should get about 12 hours of sleep and puppies get about 18 hours.
What is their routine? Do they have one? Routines are important for dogs.
If you are having problems with barking and would like to discuss more on how to help you and your dog, feel free to email me or call me.