The thesis was focused on canine interactions in public spaces. Three hundred canine dyads was observed. The gender of the dog affected the initiation of sniffing. The gender of the dog and leading of dogs had an effect on the location of sniffing on the body of dogs. Number of sniffing places was affected by day time and leading of dogs. Playful interactions were affected by the place of observation and leading of dogs. The gender of the dog and it's owner had an impact on marking the territory. In conclusion, the results indicate that canine interactions are influenced by a number of factors.

The aim of the thesis was observation of communication between dogs in open spaces in Brno. Eighty six dyads were observed. The pause before meeting was affected by the sex of the dog. Behavior during sniffing was influenced by the age and sex of the dog. The last sniffing place was affected by the age of the dog. Play was influenced by the use of a leash. The urination was affected by the sex of the dog. Results suggest that canine communication is affected by many factors.

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