2 added 2 characters in body
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All the current Dragon Slayers that wherewho were raised by Dragons have there parent Dragon inside them, that's. That's why it seems like there older thethey are more than 80 years old. So The age of 

Natsu is older thenthan Wendy, but younger thenthan Erza, so thishis age would range from 14-17. I'm leaning more towards the older side.

All the current Dragon Slayers that where raised by Dragons have there parent Dragon inside them, that's why it seems like there older the 80. So The age of Natsu is older then Wendy but younger then Erza so this age would range from 14-17 I'm leaning more towards the older side.

All the current Dragon Slayers who were raised by Dragons have there parent Dragon inside them. That's why it seems like they are more than 80 years old. 

Natsu is older than Wendy, but younger than Erza, so his age would range from 14-17. I'm leaning more towards the older side.

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All the current Dragon Slayers that where raised by Dragons have there parent Dragon inside them, that's why it seems like there older the 80. So The age of Natsu is older then Wendy but younger then Erza so this age would range from 14-17 I'm leaning more towards the older side.