The week in wildlife

London, UK: Dahlia flowers are pictured on the press day of the Chelsea Flower Show. Originally known as the Great Spring Show, the exhibition was first held in Kensington in 1862 Photograph: Shaun Curry /AFP

Masai Mara, Kenya: Giraffes look on in the game reserve, 220km south-west of Nairobi Photograph: Simon Maina/AFP

Twycross, UK: Baby crowned lemur Kali born on April 19, with mother Rose. Rose and Kali's father, Rick, have been at the zoo for six and half years Photograph: Rui Vieira/PA

Dakar, Senegal: People stand around 33 dead, beached pilot whales. This is the first mass beaching of this species in Senegal for 30 years, according to ecologists. Forty-eight others were saved by fishermen, and shellfish gatherers Photograph: Seyllou/AFP

Port Lympne, UK, One of two Siberian tiger cubs born this month, with mother Ingrid at the Wild Animal Park in Kent. The as yet unnamed cubs were born to the park's two Siberian tigers, Ingrid and Tugar. Siberian tigers a critically endangered species Photograph: Dave Rolfe/PA

Tokyo, Japan: A southern tamandua anteater named Tae goes on the rope at the Sunshine International Aquarium Photograph: Toru Hanai/Reuters

Gloucester, UK: One of 70 captivity-bred water voles is introduced into a nature reserve. In the UK the vole population has declined by 90%, but it is hoped that the new influx will grow into a stable population and perhaps spread to nearby areas and replace the ones that fell victim to last summer's floods Photograph: Matt Cardy /Getty

Fort Lauderdale, USA: A waxy monkey frog sits on a branch while on exhibit at the Museum of Discovery and Science. The traveling exhibit, which runs from May 22 to Sep 7, features an assortment of exotic live frogs from around the world Photograph: Wilfredo Lee/AP

Hortobagy, Hungary: A stork and progeny are seen in a nest on the ground, in the flatland, some 180km east of Budapest. The stork mother and father, both with broken wings are unable to fly. Thus, the storks have nested on the ground rather than in the more usual location of a tree top Photograph: Tibor Olah /EPA

London, UK: A bumblebee is pictured on the press day of the Chelsea Flower Show Photograph: Shaun Curry /AFP

Yokohama, Japan: A shoal of 15,000 sardines makes various shapes as a sand tiger shark swims in a large tank at the Hakkeijima Sea Paradise Aquarium. The aquarium has been marking its 15th anniversary Photograph: Yoshikazu Tsuno/AFP

Nyiregyhaza, Hungary: A broken tooth of anaesthetised male Bornean orang-utan, Jago, is drawn as he undergoes a medical check-up in the animal park, 245km east of Budapest, before he moves to Bojnice zoo in Slovakia Photograph: Istvan Kiss/EPA

Guantanamo Bay, Cuba: An iguana rests at Camp 4 at the US Naval Base Photograph: Rodrigo Abd/AP

Bass Rock, UK: Gannets look for food around the largest single island gannet colony in the world. The island, off the south-east coast of Scotland, is now open to visitors with weekly boat trips provided by the Scottish Seabird Centre Photograph: David Cheskin/PA