Here’s a trend that really has legs. Thousands of years after the Chinese and the Egyptians carved the feet of their furniture into the claws and paws of animals, the style is still creeping under today’s chairs and tables. “As human beings we love animal motifs,” says Leigh Keno , a New York antiques dealer and appraiser for PBS’s “Antiques Roadshow.” “Think about it: Most furniture is on four legs; a...