My Pet Fluffy

My pet's name is Fluffy. He was 2 years old when I bought him for my birthday. I put his birthday on the 9th of August, the day after mine.
He eats mice thet come out of the freezer. You have to defrost them. He always thanks me after feeding him by licking me.
He's getting more aggressive and he is nearly always in the attack position. This is when he is curled up in an S shape.
Fluffy's skin is red, yellow and white.
I'm planning to give him a slither around today.Fluffy trusts me more then anyone else .
He usually sheds his skin three times a year. Fluffy's shedded skin reaches up to my shoulder.
I like him as a pet because he is an unusal pet to have and I love reptiles.
Can you guess what he is?

by Timber