Perfectly-timed wildlife photos

Cool chameleon - A bright green chameleon opens its mouth in preparation to catch flies on the island of Hawaii.

Crowning glory - An antlered deer peeps through a green covering of ferns at Bradgate Park in in Leicestershire, England.

Mating matters - Two male spotted deer lock horns during mating season in the Kanha National Park in India.

Moody cow - A highland cow stalks grumpily towards the camera with its tongue out in Stockport, England.

Feeding time - A giraffe takes a good tongue-full of tree.

Sleepy head - A red panda slides lazily off a branch in Ljubljana, Slovenia.

Thirsty zebras - A herd of zebras simultaneously stretch out their necks for a cooling drink.

Grooming session - An impala gets a thorough grooming from a red-billed oxpecker at Kruger National Park in South Africa.

Dinner for one - A great blue heron is caught with his beak full.

Bright bird - This vibrant red male northern cardinal strikes a beautiful harmony with the red berries on this holly branch, in Vineland, New Jersey.

Moose on the loose - A curious moose in Jasper, Alberta in Canada is caught nosing through the snow to get at the salty grit scattered on the road below.

Got my eye on you - A short-eared owl gives the camera a sneaky wink in Yeoju-gun, South Korea.

Early bird - A bald eagle carries home some fish for dinner in Maryland.

Leaping fox - A fox leaps into the air at the Sierras de Cazorla, Segura y Las Villas Natural Park in Spain.

Airborne arguments - Two great egrets sort out some territorial issues over the Sea of Cortez, Mexico.

Little gem - This Andean emerald hummingbird focuses on collecting nectar from a hanging flower at the Tandayapa Bird Lodge in Quito, Ecuador.

Water for elephants - A family of elephants take a drink from a waterhole at Etosha National Park in Namibia.

Silky snack - This smooth sea lion sits poised and ready to catch piece of fish at Dublin Zoo in Ireland.