Spike

Age: He was hatched by Twilight Sparkle when she was a little filly, so a few years younger than the mane cast. He's still considered a "baby" dragon, but as far as emotional/intellectual maturity goes, he strikes me as early-to-mid teens.
Height: He's about chin-high to the ponies, so... maybe two or three feet?
Weight: I really have no idea. The ponies can carry him pretty easily, so he can't be that heavy.
Medical Info: ...MLP dragons breathe fire, eat jewels, and grow when they get greedy. Who the heck knows how their bodies work.
Eyes: green, with reptilian slitted pupils
Spines: green and rounded
( More within! )

( App sent and put up for vote 2011-10-29. )

Voted in at 97.9%! Reveal post happened here.