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A balancing act and more in this week's best animal photos

Animal Tracks May 3 - 10

Check out some of this week's best animal photos from around the world.

Image: Pet Expo Thailand 2015
epaselect epa04742751 A Prairie dog wearing a costume of US superhero comic character Captain America stands with pet food on its head during the Pet Expo Thailand 2015 press conference in Bangkok, Thailand, 11 May 2015. The showcase for animal lover Pet Expo Thailand 2015 will be held in Bangkok on 28 to 31 May. EPA/RUNGROJ YONGRITRUNGROJ YONGRIT / EPA