The Snow Petrel is one of only three birds that breed exclusively in Antarctica.

The animal was a moorhound-one of the savage hunting dogs bred exclusively on the Moonshae Islands.

In old books I have seen pictures of horses bred exclusively for beauty, with great, dark eyes that could break your heart and tiny httle muzzles that would fit in,a lady's palm.

Outcrosses are rarely used these days, as many fertile males are available, and as a result, most breeders are exclusively breeding Savannahs to Savannahs.

Souped-up their pheromones so the local females would breed with them exclusively.

It is one of only three birds that breed exclusively in Antarctica and has been seen at the South Pole.

On an overcast January morning, Bill Fraser, an ecologist and penguin expert, travelled to Litchfield Island, in the Antarctic, to see what remained of a once thriving rookery of Adélie penguins, the classic tuxedoed penguin, and one of only two penguin species that breed exclusively in Antarctica.