Because the natural order of things is wild shih tzus hunting down cows?
Wolves did hunt aurochs, and apparently, shih tzus are one of the closest related dogs to wild wolves: https://www.dogingtonpost.com/8-dog-breeds-closest-to-wolves...
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Wolves did hunt aurochs, and apparently, shih tzus are one of the closest related dogs to wild wolves: https://www.dogingtonpost.com/8-dog-breeds-closest-to-wolves...