[ozarkgirl]

However, if a black or white calf is born to her, it can no longer be considered a red heifer.

That's a silly sentence. If it has a calf - it won't be a heifer any more.

[jjotto]

Jewish translations use ‘cow’ instead of ‘heifer’.

Makes no difference, as the ashes of previous red cows are needed to purify the priest who is preparing the next red cow.

[riverrunner]

Once a cow never a heifer again