Some buildings are taking pet-friendly to another level, boasting service centers for four-legged residents.
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More eyes and employees are involved in the process of transporting four-legged passengers.
The four-legged ungulates are considered so messy and stinky that they're synonymous with slovenliness: Eat too much and you're pigging out.
It seems that as long as humans embrace animals as four-legged friends, those bonds will continue past the pet's expiration date.
Just like humans, airplane passengers of the four-legged variety must also contend with the risk of respiratory infections, dehydration and sleep deprivation.
Pistorius is not the first athlete to have challenge mans' four-legged friends.
Far from protecting it, studies show that these four-legged, 50-tonne concrete monsters, piled upon one another along the beaches, actually hasten erosion.
It's also working on Cheetah, a four-legged bot that the company says will run at 20mph when it appears in late 2012.
So most residents are fine with a four-legged feline running the show.
Of course, I probably spent too much time worrying about four-legged bears while the two-legged variety back on Wall Street continue to steal my lunch.
The very early four-legged land vertebrates, such as Acanthostega and Ichthyostega, that dragged themselves from the muddy waters on to land had five, six, seven, even eight fingers.
Its new four-legged creation is Cheetah, which can run at 18 miles an hour, far faster than the 13.1 miles per hour record set by MIT in 1989.
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New four-legged clients are adding to the brand board's workload.
In YouTube videos that have racked up 18 million views, the robotics firm sets its four-legged, 235-pound, deer-size automaton climbing over rocks, slipping on ice and stumbling through mud.
They were of dog owners, mostly the working-class poor in heavily black neighborhoods like the now famous Ninth Ward, who refused to evacuate without their four-legged loved ones - cats too.
Vogue Australia has featured Oscar-winning actresses, princesses and supermodels on its front covers, but now for the first time in the magazine's 53-year history it will be a four-legged beauty looking out from the publication's most important page.
Boston Dynamics rose to fame with its four-legged cargo robot Big Dog, (also captured in a YouTube sensation here) which shows an uncannily life-like ability to walk over terrain and recover its footing even when it slips or is kicked.
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"I looked at it as a four-legged stool with one leg very deep in the ocean, " recalls Fluxman, a tanned, toned South African who first came aboard as chief financial officer and chief operating officer, stepping up to chief executive officer six years ago.
From pet sitters to spas and massages, specialized trainers to anti-depressants, people are sparing no expense when it comes to their four legged family members.
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