ADC Friendship or competition? Symmetry in social play within the two packs of German shepherd puppies / Jana Kottferová, Lenka Skurková, Lýdia Mesarčová, Lenka Lešková, Alena Demeová, Tomáš Jakuba. In Animals. - ISSN 2076-2615. - Vol. 10, no. 9 (2020), art. no. 1627, p. [1-14]. (2019: 2.323 - IF, 28 - H-index, 0.601 - SJR, Q1 - SJR Best Q, Q1 - JCR Best Q). [KOTTFEROVÁ, Jana (10%) - SKURKOVÁ, Lenka (60%) - MESARČOVÁ, Lýdia (10%) - LEŠKOVÁ, Lenka (10%) - DEMEOVÁ, Alena (5%)

ADC Friendship or competition? Symmetry in social play within the two packs of German shepherd puppies / Jana Kottferová, Lenka Skurková, Lýdia Mesarčová, Lenka Lešková, Alena Demeová, Tomáš Jakuba. In Animals. - ISSN 2076-2615. - Vol. 10, no. 9 (2020), art. no. 1627, p. [1-14]. (2019: 2.323 - IF, 28 - H-index, 0.601 - SJR, Q1 - SJR Best Q, Q1 - JCR Best Q). [KOTTFEROVÁ, Jana (10%) - SKURKOVÁ, Lenka (60%) - MESARČOVÁ, Lýdia (10%) - LEŠKOVÁ, Lenka (10%) - DEMEOVÁ, Alena (5%) - JAKUBA, Tomáš (5%)]

Basic data
OCA1. Surname awarded to the assessed person	Kottferová
OCA2. Name awarded to the assessed person	Jana
OCA3. Degrees awarded to the assessed person	Prof. , DVM, PhD
OCA4. Hyperlink to the entry of the person in the Register of university staff	https://www.portalvs.sk/regzam/detail/6055
OCA5. Area of assessment	study programme animal hygiene and environment · III. degree
OCA6. Category of the research/artistic/other output	scientific output
OCA7. Year of publication of the research/artistic/other output	2020
OCA8. ID of the record in the Central Registry of Publication Activity (CRPA) or the Central Registry of Artistic Activity (CRAA)	206324
OCA9. Hyperlink to the record in CRPA or CRAA	https://app.crepc.sk/?fn=detailBiblioForm&sid=140044C261C1D88C1B4FA49F1F
Characteristics of the output that is not registered in CRPA or CRAA
OCA10. Hyperlink to the record in another publicly accessible register, catalogue of research/ artistic/other outputs	https://www.webofscience.com/wos/woscc/full-record/WOS:000581460900001
OCA11. Characteristics of the output in the format of the CRPA or the CRAA bibliographic record, if the output is not available in a publicly accessible register or catalogue of outputs	ADC Friendship or competition? Symmetry in social play within the two packs of German shepherd puppies / Jana Kottferová, Lenka Skurková, Lýdia Mesarčová, Lenka Lešková, Alena Demeová, Tomáš Jakuba. In Animals. - ISSN 2076-2615. - Vol. 10, no. 9 (2020), art. no. 1627, p. [1-14]. (2019: 2.323 - IF, 28 - H-index, 0.601 - SJR, Q1 - SJR Best Q, Q1 - JCR Best Q). [KOTTFEROVÁ, Jana (10%) - SKURKOVÁ, Lenka (60%) - MESARČOVÁ, Lýdia (10%) - LEŠKOVÁ, Lenka (10%) - DEMEOVÁ, Alena (5%) - JAKUBA, Tomáš (5%)]
OCA12. Type of the output (if the output is not registered in CRPA or CRAA)	article
OCA13. Hyperlink to the webpage where the output is available (full text, other documentation, etc.)	https://www.mdpi.com/2076-2615/10/9/1627/htm
OCA14. Characteristics of the author's contribution	The author was responsible for the idea of the publication and participated in its final form.
OCA15. Annotation of the output with contextual information concerning the description of creative process and the content of the research/artistic/other activity, etc.	Social play has a definitive direct effect on other social interactions within the group. Authors had a unique chance to observe German Shepherd dogs when all the studied individuals were at the same age which means opportunity to evaluate the impact of body size and sex as primary variables in social play and its symmetry (as the age effect is theoretically removed). We found that both males and females preferred a partner of the opposite sex. Our hypothesis that there is a correlation between the body size of puppies and their “success” within social play was not confirmed. The hypothesis regarding the symmetry of social play within two puppy packs of German Shepherd dog was confirmed at the age of 7 weeks for both litters and at the age of 9 weeks for litter 1. However, the low sample size does not provide enough data to make any definitive conclusions and further analysis with more individuals is recommended.
Other data
OCA16. Annotation of the output in English	Social interactions within canine groups have been studied for decades. In relation to egalitarianism in social play (the \"rule of 50:50\"), most discussed attributes were body size or age of the play participants. We observed the social play of 14 German Shepherd puppies (two litters) at the age of 7 weeks, and once again at the age of 9 weeks (in total we observed 43 play pairs, also known as dyads). These litters were observed separately (litter 1: n = 28, litter 2: n = 15), and we evaluated 2542 interactions of social play in total. This total number included all interactions observed between the 43 dyads-1287 interactions at the age of 7 weeks old and 1255 interactions at 9 weeks old were recorded. The aim of our study was to evaluate symmetry within play interactions of puppies. Symmetry within the play has been confirmed for litter 1 at the age of 7 and 9 weeks and for litter 2 at the age of 7 weeks, but the final interpretation of our results is limited due to the small sample size and it is impossible to generalize our results for domestic dogs or a specific breed.
OCA17. List of maximum 5 most significant citations corresponding to the output	Nolfo, A.P., Casetta, G., Palagi, E.: Play fighting in wild spotted hyaenas: like a bridge over the troubled water of a hierarchical society, 2021, Animal Behaviour Iki, S., Hasegawa, T.: Face-to-face configuration in Japanese macaques functions as a platform to establish mutual engagement in social play. 2021 Animal Cognition
OCA18. Characteristics of the output's impact on socio-economic practice	For further studies, we would suggest an evaluation of breed differences (and including more individuals of each breed), ecological backgrounds and environmental factors regarding the development of egalitarian (or some other) play style.
OCA19. Characteristics of the output and related activities' impact on the educational process	Paper investigates the symmetry of social play in German Shepherd puppies. The results of the study serve in the educational process of veterinary students.