Week in wildlife

A crocodile attacks a zebra as it crosses Mara river in the Maasai Mara game reserve Photograph: Radu Sigheti/Reuters

Lima, Peru: A typical Peruvian hairless dog. The Association of Friends of Hairless Dogs of Peru (AFHDP) offered a solution to Barack Obama's dilemma of where to find a White House dog suitable for his allergic daughter Photograph: Ernesto Benavides/AFP/Getty Images

Basel, Switzerland: Baby hippopotamus Farasi, born on November 6, in its enclosure with mother Helvetia Photograph: Andreas Frossard/AP

Patoko, Bolivia: Sheared vicunas wait to be released by farmers. The vicuna is one of two wild South American camelids that live in the highland areas of the Andes Photograph: Dado Galdieri/AP

Ratsevo, Belarus: Three moose walk through a dawn mist. Hunting is a popular tourist attraction in the former Soviet republic. Aside from moose, several thousand wild boars are taken by hunters every season Photograph: Vasily Fedosenko/Reuters

Krefeld, Germany: A male silver marmoset carries its offspring through the enclosure at the zoo. Twin silver marmosets were born at the end of October and are now almost eight centimetres in height. They are mainly cared for by their father. In their natural environment in Bolivia, central Brazil and Paraguay the animals are endangered Photograph: Roland Weihrauch/EPA

Australia: A sheep from the first flock of a new Australian dairy sheep cross breed in Grandvewe dairy. The breed blends a rare Israeli milking breed, the Awassi, with a delicate milk sheep originating from Holland, the East Friesland, to produce sheep's milk cheeses, yoghurts and ice cream Photograph: Simon De Salas/EPA

Baquba, Iraq: A puppy sleeps under a US soldier's hat and rifles Photograph: Goran Tomasevic/Reuters

Maasai Mara, Kenya: Two lionesses sleep on the plains of the Maasai Mara game reserve Photograph: Laszlo Balogh/Reuters

Gasoo, India: A bear hides in a forest. State officials are continuing their efforts to trap the two bears, who escaped into the residential area and wounded two locals Photograph: Farooq Khan/EPA

London, UK: A rare rhino rat snake (Rhynchophis boulengeri) emerging from its shell. The reptile house managed to produce a clutch of eight snakes, three of which have now gone to different collections as part of an exchange programme to increase the captive population in European zoos. This species of snake which originates from the mountains of Vietnam has been bred in a European zoo for the first time Photograph: Ferry Van Stralen/ZSL London Z/EPA

Medellin, Columbia: A spider monkey tries to get a banana from a tourist visiting the Santafe zoo Photograph: Albeiro Lopera/Reuters

Minsk, Belarus: A fieldfare eats an ashberry in a park on the bank of the Svisloch river Photograph: Vasily Fedosenko/Reuters

Singapore: A nautilus swims in Underwater World, a new showcase known as The Masters of Disguise, a collection of intelligent marine life found in the deep seas. The nautilus is the only member of the cephalopod family to have a fully developed shell which encases its entire body Photograph: Wong Maye-E/AP

Gretna Green, UK: Starlings put on a spectacular performance every night as they come to roost in the area before leaving for Russia Photograph: Owen Humphreys/PA