VIDEOS:
"How old are you?"
The Jem'Hadar that talks to Jadzia is 8 years old, saying that their species is able to fight by their 3rd day of life and that living to age 20 grants "Honored Elder" status, thanks to being genetically engineered. Jadzia, on the other hand, has lived more than 300 years.
Example of:
Older Than They Look