ok, so on sunday my ball python bit me because i accidentally hurt him, but i didn’t think much of it. Just now I reached in to touch him, and he struck at me, though luckily I moved in time. I put on two pairs of gloves because now I’m wary and tried touching him again, making sure he saw me before I did, and he looked like he was getting ready to strike. He's always been extremely docile, but now I'm worried. What's going on? (I feed him one mouse every Sunday, he recently finished shedding, and he’s 2 years old. I've had him since he was 4 months.)