It is best to treat a dog with pneumonia in time. The hope of cure is very high. If it is not treated, it can probably live for about 1 to 2 weeks. This has a lot to do with the dog's own constitution, condition and treatment methods. If it is a relatively mild pneumonia, it can be cured in about a week by taking medicine or injections. If it is a more severe pneumonia, it will take about a month to recover. , Dogs should supplement nutrition during their illness to improve their resistance and facilitate recovery.