Yes, I put it up there in bold so you would read it.
0-2 years (pup form)
2-5 years (regular adult form)
5-8 years (possibilty of growing wings)
9-17 years (death age)
Basically, at the age of 5 the Zarian has a chance of growing wings. The highest chance for a Zarian to grow wings is a mythical. Which brings us to the next thing. Rarity
All Zarians are born with a certain Rarity. Here is the chart.