Rhody helped with this recycled article.

Tony Tomeo

P80117Wire haired terriers know how it works. They wear wiry hair through summer to shade their skin while allowing cooling air circulation. Their softer and fuzzier undercoat that develops in autumn provides better insulation from cold weather through winter.

Beards are not naturally so adaptable, but can be manipulated to function better. Thick beards might insulate and deflect wind through winter. Short beards may not work as well in that regard, but might absorb warmth from sunlight if still darkly colored. As weather gets warmer in spring, beards can simply be removed to optimize cooling air circulation, and eliminate the extra insulation. However, long and gray beards can provide shade without absorbing much warmth from sunlight.

Have you ever noticed that plants that live near foggy coasts or in the lower levels of shady jungles and forests are the darkest green? They want to absorb all the sunlight they can…

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