What two canine profiles formed the foundation of the Whippet breed through targeted crossbreeding?

Answer

The Greyhound and various Terrier breeds

The Whippet was deliberately engineered in the 19th century specifically to combine desirable traits from established breeds. The primary genetic source for speed, lung capacity, and the sighthound profile—including the deep chest and arched loin—came from the Greyhound. To make the resulting dog more affordable, smaller, and hardier for the working class, stock from various Terrier breeds was introduced. This introduction of Terrier genetics provided necessary hardiness and tenacity, often linked to their suitability for catching quarry, resulting in a compact dog that retained the speed characteristics of its larger cousin.

What two canine profiles formed the foundation of the Whippet breed through targeted crossbreeding?
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