1/6 #AnimBehav2021 APOPO trains @HeroRATs (cricetomys ansorgei) to sniff out landmines and tuberculosis. But what makes a good Hero? Like humans, rats might exhibit unique personalities, which could contribute to their detection behavior and success. 2/6 #AnimBehav2021 @BroeckeBram worked with the @HeroRat team to design a GIANT open-field arena. We tested 25 rats (M & F, varying ages & training experiences). Using films of the rats, we categorized their behavior into categories: anxiety, exploratory, or locomotor.