Eli5: How does wagyu fat not melt inside the cows while they are alive?

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Wagyu beef marbling fat melts at room temperature 77°F/25°C while preparing. So how does that fat stay solid inside the cows while they are alive? Especially during the hot Japanese Summer.

In: Biology
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Fat is not solid inside the body. Otherwise you wouldn’t be able to move your body around freely.

Biologist here!

Fat inside the body is hooked up to a supply of blood and sweet, sweet nutrients. Once that is disconnected, the fat starts to break down, lowering its gel temp.

A human body will decompose in temps above 45 F after death, but can survive over 130 F when alive