What popular legend attributes the Chartreux's quiet nature to historical monks?

Answer

A legend suggests they resided in French monasteries and took a vow of silence.

A popular, though apocryphal, story posits that these cats lived with Carthusian monks in France and consequently adopted a vow of silence, which contributes to their quiet reputation.

What popular legend attributes the Chartreux's quiet nature to historical monks?
breedFelineVocalizationChartreux