Daniel

• Daniel was of the royal family.  (Daniel 1:3)
• Daniel must have been a young man when taken captive because he was in captivity at least 67 years.
• Shortly after entering Babylon Daniel proved that a vegetarian diet is much better for a person.  (Daniel 1:8-20)
• Daniel was given 3 years of special training in Babylon. (Daniel 1:5)
• At the end of the 3 years they (Daniel and his 3 friends) were brought before the king and "he found them ten times better than all the magicians and astrologers that were in all his realm".  (Daniel 1:20)

Daniel

1:21 And Daniel continued [even] unto the first year of king Cyrus.

For further study, read:

• In the Court of Babylon