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Kibble for Thought: Dog diversity prompts new evolution theory

By Christen Brownlee

- More than 2 years ago

The wide range of variety in domesticated dogs—from the petite Chihuahua to the monstrous mastiff—has powered a new view of what drives evolution.

NOBODY KNOWS. A new hypothesis might explain why purebred bull terrier snouts changed dramatically from (top to bottom) 1931 to 1950 to 1976. Fondon and M.