Breed and breed group sample size (<i>N</i>), sex (F: female, M: male), and mean age (years) of dogs tested in the present study. Akitsugu Konno Teresa Romero Miho Inoue-Murayama Atsuko Saito Toshikazu Hasegawa 10.1371/journal.pone.0164760.t001 https://plos.figshare.com/articles/dataset/Breed_and_breed_group_sample_size_i_N_i_sex_F_female_M_male_and_mean_age_years_of_dogs_tested_in_the_present_study_/4031334 <p>Breed and breed group sample size (<i>N</i>), sex (F: female, M: male), and mean age (years) of dogs tested in the present study.</p> 2016-10-13 17:40:09 Canis familiaris Visual Communication breed group purebred dogs breed selection Ancient breeds 125 dogs breeds subjects eye contact dog Breed Differences gaze behavior relationship initiation Previous studies unsolvable situation breed groups domestication history human-dog interactions