@Woodbmagic,
He probably smells the food on your hand.
Just a few notes:
• keep your voice low around your rat(they don't like high pitched or loud noises
•don't make any quick or jumpy movements
•pet your rat gently
•if he does bite don't jerk or get mad at him otherwise he will bite to simply make you leave him alone
But don't worry it's totally normal for a new rat to be skittish and jumpy at first so just keep up the good work and he will warm up to you with time:)
I have two male rats with two very different personalities. Justin(who is named after the rat on the secret of Nimh)is a very high energy,skittish, and very loving agouti(brown) and white hooded fancy rat who wouldn't bite a fly, and on the otherhand there's Toby a lazy Burgendy and white hooded fancy rat who has bitten me twice yet with a little love and lots of Cheerios later he finally warmed up to me:)
Good luck with your rat:)