The thesis was focused on canine interactions in public spaces. Two hundred canine dyads were observed. The gender of the dog, size of the dog and leading of the dog had an effect on the quitting after stopping before meeting. The gender of the dog and leading of the dog affected of the first sniffing place on the body of the dog. The gender of the dog, age of the dog and leading of the dog had an effect on the behavior during sniffing. Playful interactions were affected by the gender of the owner, gender of the dog, age of the dog and leading of the dog. Time of observation, gender of the owner, gender of the dog, age of the dog and leading of the dog affected the type of game. In conclusion, the results indicate that canine interactions are influenced by a number of factors.