How Long Should A Baby Have A Bottle For?

There are no set rules for when to stop a child from bottle feeding. Some children use a bottle way past their first birthday and some even have use for it up to two years old. But it is always better to wean a baby off his bottle earlier then later as eventually he/she may develop an attachment to it and this happens when they are around seven months old. You should be gentle when trying to wean a child off the bottle; getting him to use a cup or glass more often is a more positive way to go about it. Forcing a child may only aggravate him unnecessarily and if it becomes too much of an issue you can postpone the entire procedure. The important thing is to be gentle.    

There's no hard and fast rule for how long a baby should be bottlefed but it's not usual for a baby to have a bottleafter the age of two.
If the baby is having real problems coming off the bottle and is a little bit older and can understand things to a degree you can try a few tricks here.
If the child is approaching the later age scale you can try telling little stories. Perhaps you can explain that there are other little children who need a bottle and say that you can send it to them or you can leave it out for the birds? These ploys have worked for people I know. They've prented to swop the bottle for a nice present and had no further problems!
For smaller children it's more problematic but forcing a baby off a bottle isn't the way to do things and is distressing for both baby and parents. Once a baby is used to a cup, it's usually only at night the bottle feed can be a problem. Instead when they are old enough try alot of cuddles and alot of praise when the little one uses a cup but don't worry about the bottle if the baby still wants one by the time they are one.

A baby is taking a bottle at age three

You should take the bottle away at 1-2 years old . Because the bottle can mess up your baby teeth.