Sol (L), a three-year-old hippopotamus and its mother Carlota, eat Sol's birthday cake at the zoo "Parque de Las Leyendas" in Lima, on September 20. Lima's zoo organized a birthday party for Sol, giving it a vegetables cake and raffling its cuddly toys for children who attended the event. Sol is the second offspring of Carlota to be born outside its natural environment. Reuters/Enrique Castro-Mendivil