The present invention relates to a canine foodstuff or oral care product which comprises a canine oral cavity probiotic, as well as to probiotic strains deposited under the Budapest Treaty, antibodies raised against the strains and which specifically bind to the deposited strains, use of the strains to obtain antibodies, compositions comprising one or more of the probiotic strains and use of the compositions in medicine, a method of detecting the presence of one or more of the strains deposited, kits for detecting the presence of one or more of the strains deposited and a method of improving or maintaining canine oral health. The present invention also relates to other deposited micro-organisms and their use in identifying canine oral cavity probiotics.
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