The present invention relates to a probiotic preparation for preventing and treating canine gastrointestinal disorders containing at least two dog-specific strains of lactic acid bacteria belonging to genus Lactobacillus, a calcium source in an amount of 20-99 weight-% expressed as CaCO3 of the dry weight of the preparation, and at least one prebiotic, and optionally additional dog-specific strains of lactic acid bacteria, excipients and carriers. The invention further relates to a process for the manufacture of the probiotic preparation, to dog food comprising the probiotic preparation, and to the use of the probiotic preparation for the manufacture of a pharmaceutical product or a dog food product for preventing and treating canine gastrointestinal disorders.
