For Miniature and Toy varieties, when is purchasing an insulated coat highly recommended for walks?

Answer

When walks exceed ten minutes below 40°F (about 4°C)

For Miniature and Toy varieties, purchasing a well-fitting, insulated sweater or coat is highly recommended for walks that go beyond ten minutes when the ambient temperature is below 40°F (about 4°C).

For Miniature and Toy varieties, when is purchasing an insulated coat highly recommended for walks?
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