The week in wildlife

A young male capuchin monkey, which was born at a medical research laboratory in Santiago, Chile. 88 monkeys were rescued by Monkey World in Dorset Photograph: Monkey World Ape Rescue Centre/PA

Durham, UK: Early lambs in the snow Photograph: Owen Humphreys/PA

Val d'Isere, France: A composite of four pictures showing a squirrel crossing the race slope during the first training session of the Bellevarde downhill event Photograph: Olivier Morin/AFP

Munich, Germany: The new female polar bear at the Hellabrunn zoo is presented to the press Photograph: Frank Leonhardt/EPA

Chester, UK: Margaret, the 10-day-old giraffe, is bottle fed by Chester zoo keeper Tim Rowlands. Margaret is the first Rothschild giraffe born at the zoo and is being hand reared after having difficulty suckling from her mother Photograph: Christopher Furlong/Getty

Singapore: The underside of a spotted ratfish at Underwater World. The fish is considered a missing link between sharks and rays and were brought into the tourist attraction to usher in the Chinese New Year of the Rat Photograph: Wong Maye-E/AP

Guiyang, China: Some wild macaques keep each other warm in Qianling Park Photograph: Qin Gang/Xinhua/AP

Montevideo, Uruguay: A hummingbird hovers over a flower Photograph: Miguel Rojo/AFP

Cuautitlán, Mexico: Elvira Romero shows the difference in colour of regular eggs and the ones laid by her hen, Rabanita. The bird has become a celebrity after people found out that the hen is able to lay green eggs Photograph: Mario Guzman/EPA

Rio de Janeiro, Brazil: The fossil of a newly discovered prehistoric crocodile (Montealtosuchus arrudacamposi) at the Federal University Photograph: Antonio Lacerda/EPA

Vienna, Austria: Panda cub Fu Long makes its first public appearance at the Schönbrunn zoo Photograph: Helmut Fohringer/EPA

A snail, which experts have said are the number one enemy in the nation's gardens. Slugs and snails were the most troublesome pests of 2007, according to the Royal Horticultural Society Photograph: Jacky Parker/PA