**Acknowledgements**

This publication was supported by the project of the Ministry of education science Research and sport of the Slovak Republic VEGA 1/0788/19: "*Study of changes in microbiota of dental biofilms in humans and dogs in order to harmonize the oral microbiocenosis by using the selected oral probiotics"* and by the Slovak Research and Development Agency under the contract no. APVV-16-0203.
