Abstract
The genus Streptococcus includes commensal microorganisms, pathogens and opportunistic pathogens for humans and animals. Streptococcus canis is the most common Streptococcus species in dogs, causing a wide spectrum of infections, including external otitis, dermatitis, respiratory and urogenital tract infections, endocarditis, and septicemia; in addition, in newborn puppies, it can cause n…