In dogs with bacterial pneumonia, the serum CRP was successfully used to guide the duration of antibiotic treatment and it was stopped 5–7 days after the CRP normalization [70]; this finding supports the idea that the APPs evaluation could be used in support of the therapeutic approach (i.e., the need to use the antibiotic or supportive treatment) in veterinary medicine as well to minimalize the risk of creating resistant bacterial strains. The gene discussed is CRP; the disease is bacterial pneumonia.