It's a little hard to figure out the rules for sure but the baby African buffalo (水牛）seems to have the upper hand. The two stand a couple   feet apart, staring at each other. Behind them, their mothers look on with the kind of indifference (不关心）of mothers everywhere who see their kids playing a harmless game.

The alarm went off about half an hour ago, the second time tonight. Here，one bell means "elephant ",two "rhino"(犀牛），and three and four，I really can't remember for what，because when you' re awoken by bells in the middle of the night，your first thought won’t be Animal", But as soon as I realized it was the rhino alarm, I was running for the stairs.

Yet I'm the only one watching the animals stare-down. Either nobody else died of a heart attack when the bells went off, or I was the only one in the entire hotel who didn't turn the alarm switch to off before going to bed.

The Ark, a hotel shaped like the biblical ark(圣经的方舟), lies in the highlands of Kenya’s Aberdare National Park, about 100 kilometers north of Nairobi. At the Ark's prow (船首) are huge windows overlooking a waterhole. Earlier tonight，I'd watched a pack of wolves, buffalos and elephants. And now, at Three or so in the mornings   I'm   down   for   the round of rhino bells. The first time, 2.5 hours ago, it was a single black rhino, which came   down, got a   drink, and left.

I'd have been sorry for the lost sleep. I've already arranged with a guide to take me out at sunrise for the so-called "should-never-missed" bird-watching, where well get to see 30 species, but really, how many times in your life will you get to wake up and say，"Wow! Rhino? Isn't that the definition of a pretty good right? Last week we went from Uganda into Kenya，Before I left home, I thought I'd be happy with ten elephants and five or six giraffes on the whole trip.I   didn't dare to dream the rhino.

Honeybees can’t swim, and when their wings are wet, they can’t fly, either. But Chris Roh and other researchers at the California Institute of Technology found that when bees drop into bodies of water, they can use their wings to produce little waves and slide toward land—like surfers who create and then ride their own waves.

As with many scientific advances－Isaac Newton’s apple or Benjamin Franklin’s lightning bolt—Dr. Roh’s experiment began with a walk. Passing Caltech’s Millikan Pond in 2016, he observed a bee on the water’s surface producing waves. He wondered how an insect known for flight could push itself through water.

Dr. Roh and his co-worker, Morteza Gharib, used butterfly nets to collect local Pasadena honeybees and observed their surf-like movements. The researchers used a wire to restrict each bee’s bodily movement, allowing close examination of their wings. They found that the bee bends its wings at a 30-degree angle, pulling up water and producing a forward force. Bees get trapped on the surface because water is roughly three times heavier than air. But that weight helps to push the bee forward when its wings move quickly up and down. It’s a tough exercise for the bees, which the researchers guess could handle about 10 minutes of the activity.

The researchers said the surf-like movement hasn’t been documented in other insects and most semiaquatic insects use their legs for propulsion, which is known as water-walking. It may have evolved in bees, they predicted.

Dr. Roh and Dr. Gharib have imagined many practical applications for bees’ surfing. One plan is to use their observations to design robots able to travel across sky and sea. “This could be useful for search and rescues, or for getting samples of the surface of the ocean, if you can’t send a boat or helicopter,” Dr. Gharib said.

The city of Rome has passed a new law to prevent cruelty to animals. All goldfish bowls are no longer allowed and dog owners must walk their dogs.

This comes after a national law was passed to give prison sentences to people who desert cats or dogs.

“The civilization of a city can be measured by this,” said Monica Cirinna, the councilor (议员) behind the hew law.

“It's good to do whatever we can for our animals who in exchange for a little love fill our existence with their attention,” she told a Rome newspaper.

The newspaper reported that round bowls don't give enough oxygen for fish and may make then go blind.

“Rome has tried to protect fish more than anywhere else in the world, It stands out for recognizing that fish are interesting animals who deserve our respect and compassion every bit as much as dogs and cats and other animals,” said Karin Robertson, a director of the People for the Ethical Treatment of Animals.

Last year a law was passed in Italy that gives people who desert pets big fines and prison sentences Since then local governments have added their own animal protection rules.

The northern city of Turin passed a law in April to give pet owners fines of up to $598 if they do not walk their dogs three times a day.

The new law in Rome also says that owners mustn't leave their dogs in hot cars or cut their dogs' tails to make them look lovelier. The law also gives legal recognition to the “cat ladies” who feed homeless cats The cats live all over the city from ancient ruins to modern office car parks.