A keeper with a red-necked wallaby cub in Lodz, Poland, 29 March 2015. The wallaby named Tosia was born at a private mini-zoo about four months ago and weighs only 500 grams. Tosia's mother died about 3 weeks ago and now she is bottle-fed every 3 hours and carried in a special bag by the employee. (Photo by Grzegorz Michalowski/EPA)
