The week in wildlife – in pictures

A male jaguar attacks a Yacare caiman by biting its neck in Pantanal, Brazil. The 20-stone cat later dragged its prey back across the water and into the jungle Photograph: Justin Black/Barcroft Media

A vet examines a young cattle egret at a shelter in the village of Hathijan, Gujarat, India. Some 400 cattle egrets were rescued but more than 100 died at the site of illegal tree cutting at Ranasan, about 40 miles from Ahmedabad
Photograph: Sam Panthaky/AFP/Getty Images

Badger in the Woods by Richard Packwood, winner of the wildwoods category at this year's British Wildlife Photography Awards Photograph: Richard Packwood/BWPA/PA

Dragonflies at the Taipei Botanical Garden in Taiwan, which covers 15 hectares in the city's Zhongzheng district Photograph: Xinhua/Barcroft Media

A lion sleeps under a lightning-filled sky in Kalahari, South Africa, from Hannes Lochner's new book The Dark Side of the Kalahari. The photographer spent more than two years in the Kalahari desert to chronicle the wildlife at night Photograph: Hannes Lochner/Barcroft Media

Birds gather at dawn around the 14th-century St Michael's Tower, on Glastonbury Tor, Somerset
Photograph: Matt Cardy/Getty

A greater bulldog bat (Noctilio leporinus) catches a fish on the lake surrounding Barro Colorado Island, Panama. This picture by Christian Ziegler is from a new book book, The Masters of Nature Photography, published by the Natural History Museum Photograph: Christian Ziegler/The Masters of Nature Photography/Natural History Museum

Dead fish in the Fuhe River, killed by the high ammonia concentration upstream in Wuhan, China Photograph: Feature China/Barcroft Media

Blue sheep (Pseudois nayaur) in the Ningxia Helan mountains in Yinchuan, China. The average population density of the sheep has risen to 14 to 17 per sq km in the mountain area and the total number in the area has reached more than 20,000 following enhanced conservation Photograph: Xinhua/Barcroft Media

A Chilean flamingo (Phoenicopterus chilensis) chases a brown-hooded gull (Chroicocephalus maculipennis) in Barra de Maldonado, Uruguay
Photograph: Pablo Porciuncula/AFP/Getty

A water vole eats on a river bank. One of the UK's most endangered mammals, nearly 90% of the creatures have disappeared in the past decade, mainly due to habitat loss and predators such as the American mink Photograph: Ian Schofield/LNP

Star tortoises in east Bengal, eastern India. In one of the largest rescues of the endangered reptiles, Indian border troops seized 952 star tortoises being smuggled across to Bangladesh Photograph: Barcroft India

This European rhinoceros beetle (Oryctes nasicornis) was discovered by Angie Hill in her organic garden in Martley, Worcestershire. It is the first time the beetle, which grows up to 6cm long, has been found in Britain; until now it was found only on the continent Photograph: Buglife/PA

A worker uses a hammer to break apart freshly harvested oysters in Inverness, California. The park service and conservationists argue that operations are destroying eelgrass beds near the area used by harbour seals for reproducing
Photograph: Justin Sullivan/Getty

A bumblebee is attracted by a sunflower in Godewaersvelde, northern France
Photograph: Philippe Huguen/AFP/Getty