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Our primary interest is in welfare of Amur tiger (Panthera tigris altaica, Temminck, 1844) in the Barnaul Zoo and Leningrad Zoo. As discussed below, behavioral researches can reveal much about the welfare of captive wild animals. Amur tiger s behavior is studied and time budget is calculated for males and females. The Schorygin’ similarity coefficient of behavior is determined (82.64% and 86.76%). We analyzed the differences in their behavior before and after olfactory enrichment. Cinnamon oil reduces pacing, sheltering, sleep and rest time, play behavior, increases exploratory behavior in 50% of researched Amur tigers. The reaction time of the flemen increased in both males. Younger animals better perceived olfactory enrichment. Stereotypical behavior (pacing) have decreased in post-enrichment day. Key words: Captive tiger, Olfactory enrichment, Cinnamon oil, Amur tiger, Panthera tigris altaica, Barnaul Zoo, Leningrad Zoo. References Altmann J. (1974). Observational study of behavior, sampling methods. Behaviour, 49, 227-267. Antonenko, T.V., Panchuk, K.A., Medvedeva, Yu.E. (2017). The influence of olfactory enrichment on the welfare of large felines in captivity. Ukrainian Journal of Ecology, 7(4), 134–138, doi: 10.15421/2017_105 Antonenko, T.V., Ulitina, O.M., Pysarev, S.V. (2018). Welfare of Eurasian lynx in the Barnaul Zoo. Ukrainian Journal of Ecology, 2, 1-5. http://dx.doi.org/10.1590/1519-6984.22814 Mason, G., Burn, C. C., Dallaire, J. A., Kroshko, J., McDonald Kinkaid, H., Jeschke, J. M. (2013). Plastic animals in cages: behavioural flexibility and responses to captivity. Animal Behaviour, 85(5), 1113–1126. Resende, L.S., Pedretti Gomes K. C., Andriolo A., Genaro G., Remy G. L., Almeida Ramos Júnior V. (2011). Influence of cinnamon and catnip on the stereotypical pacing of oncilla cats (Leopardus tigrinus) in captivity. Journal of Applied Animal Welfare Science, 14(3), 247-254. https://doi.org/10.1080/10888705.2011.576981 Vidal, L. S., Guilherme, F. R., Silva V. F., Faccio, M. C. S. R., Martins, M. M., Briani, D. C. (2016) The effect of visitor number and spice provisioning in pacing expression by jaguars evaluated through a case study. Braz. J. Biol, 76(2), São Carlos Apr./June 2016 Epub Mar 08, 2016 Yu, S., Jiang, Z., Zhu, H., Li, C., Zhang, E., Zhang, J., Harrison, C. (2009) Effects of odors on behaviors captive Amur leopards Effects of odors on behaviors captive Amur leopards Panthera pardus orientalis. Current Zoology 55(1), 20-27.

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