streptococcus cricetus streptococcus cricetus streptococcus cricetus is a species of streptococcus. streptococcus cricetus scientific classification domain: bacteria phylum: bacillota class: bacilli order: lactobacillales family: streptococcaceae genus: streptococcus species: s. cricetus binomial name streptococcus cricetuscoykendall 1977 (approved lists 1980)