Data scientists are not a common breed, which is why Hillion (and I) think they will be in demand.

FORBES: EMC Greenplum's Steven Hillion on What Is a Data Scientist?

Alberta's battle with rodents began around 1950, when Norway rats, the most common breed, began migrating into the province in large numbers.

WSJ: In Alberta, Citizens Smell a Rat After Long-Banned Rodents Appear

Since the world changed, there had not been much time to breed horses, so around here anything distinct from the American quarter horse or a common draft animal tended to stand out.

NPR: Excerpt: 'World Made By Hand'

Payne believes that far from being a dying breed, bosses who work their way up from the shop floor will become increasingly common as fewer people opt to go into higher education.

BBC: Can you still go from burger flipper to president?

Two decades ago, there were maybe a dozen woolly, teddy-bear like Barbets in the U.S. The breed is better known in Europe, especially France, but isn't an especially common dog even there.

WSJ: Breeders of Rare Woolly Pooch

Ordinary people, who regarded Mr Tohra as the last among a vanishing breed of simple and fiercely honest politicians, stood silently in the blistering sun around the common cremation grounds at Village Tohra.

BBC: Gurcharan Singh Tohra