there is increasing interest among social and behavioral scientists in brief measures of attitudes and personality traits. Based on factor analysis and using an existing data set (n = 400 adults), we constructed a 5and a 10-item version of the widely used animal attitude Scale (aaS). Both versions were highly correlated with the original 20-item aaS (rs > 0.95, p < 0.001), and both versions demonstrated acceptable reliability and validity. the aaS-5 and the aaS-10 have excellent psychometric properties and offer alternatives for researchers who need convenient and short measures of attitudes related to animal welfare.Due to the increasing awareness of the importance of animals in human life, researchers have developed a variety of instruments designed to measure aspects of our relationships with other species. Wilson and Netting (2012) recently undertook a comprehensive examination of 140 English-language measures of human -animal interactions. these instruments ranged from measures of beliefs about bird feeding to frequency of experiences with animal cruelty. the majority (62%) of the scales they located, however, assessed aspects of relationships with pets, and much less attention has been given to assessing individual differences in attitudes toward the ethics of the use of other species. many questions related to the psychological underpinnings of animal ethics can be addressed via attitude scales. these include, for example, the impacts of factors such as education, early experiences with pets or hunting, personality differences, social class and political ideology, beliefs about animal sentience, and the relationship between attitudes and behaviors (e.g., meat eating, involvement in animal protection).the animal attitude Scale (aaS) 1 (herzog, Betchart and Pittman 1991) is one of the most widely used measures of general attitudes toward 145 anthrozoös