What is the key property of winter melons that makes them effective for cooling pets?

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The high water content and specific heat capacity of winter melons make them effective for cooling pets.

Winter melons possess a nearly 95 per cent water content, which is higher than that of any other melon. This substantial water volume, coupled with water's high specific heat capacity, allows the melon to remain cool for extended periods. Consequently, a winter melon's skin temperature can be 3 to 5 degrees Celsius lower than ambient room temperature, providing a natural cooling effect.
High Water Content and Specific Heat Capacity

The exceptional water content of winter melons is the primary factor contributing to their cooling properties. Water's high specific heat capacity means it can absorb a significant amount of heat energy before its own temperature rises substantially. This characteristic enables the winter melon to maintain a cooler surface temperature for prolonged durations, even in warm environments.
Natural "Cold Water Pack" Effect

The temperature difference between the winter melon's surface and the surrounding air creates a sensation akin to a natural cold water pack. When a pet rests against the melon, the vegetable actively draws heat away from the animal's body. This process offers a simple, chemical-free method of physical cooling.
Traditional Wisdom and Modern Application

The use of winter melons for cooling is rooted in traditional Chinese folk wisdom, with an old saying suggesting to "hug a winter melon" when feeling overheated. This age-old practice has been rediscovered and amplified by contemporary social media trends, where videos of pets, particularly cats, lounging on winter melons have gained widespread popularity.
Commercialisation and Consumer Response

The viral trend has spurred commercial interest, with fresh produce platforms introducing specially packaged mini winter melons marketed as pet cooling devices. Sales for these pet-themed winter melons have seen significant increases, demonstrating a strong consumer response to this novel application of a common vegetable.

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What is the key property of winter melons that makes them effective for cooling pets?

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