Suckling calves are weaned, on average, when they are 6 months of age (though that can range from 3 months to over 10 months).
Bottle calves are typically weaned off the bottle when they're around 2 to 3 months old.
The Bovine Practicum Q&A "blog" is an informative, just-for-fun section where I find a variety of questions that are often (and not-so-often) asked by inquisitive people like you, and answer them to the best of my ability. Much of the questions have come from a wide variety of reaches from the Internet.
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