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A full grown chihuahua takes about a year and a half to two years.
as long as a banana
It is not actually a horn, but a tooth, and it can grow up to 9 feet long (no joke)
about two to three months.
you can make your hair grow long by greasing it.
it can be grown everywhere as long as you have the seed.
6 Hours
That would depend on if your a child or not. you have two sets of teeth in your life time, when you are a child and lose a tooth an adult tooth takes its place, if your an adult and lose a tooth it does not grow back.
you have to have certain genes, my hair grows an inch and a half in a month. but it will take about half of a year to grow it really long
About a year and a half.
Most teeth are of fixed size except in rodents and elephants.
It usually takes about from six months to five months.