Suddenly being snappy could also mean being hungry. What are you feeding, and how often?
I was feeding two Weaned mice every Thursday then a couple of weeks ago he stopped eating two and would only eat one. i could tell he was still hungry after the first but he still wouldn't eat the second. Thursday I gave him a large mouse he seems to have Chilled out a little but I haven't really bothered him except yesterday when I had to fix some stuff in his tank.
I read last night that if your snake doesn't ball up she's fearless and content. Mine last night laid on the couch while i watched a movie fully extended and feel asleep.
I find it best to warn them before I pick them up. Even if they are looking at me, I like to stroke their back a few times before I go to lift them, so they know whats about to happen. I'm sure it's completely unnecessary, but I feel it's polite if anything else. Emrys has had a few times where he was a bit cranky and looked like he might want to strike, and I just left him alone for a day or two and he was fine to be handled again.
1.0 Normal (Emrys)
0.1 Fire (Calypso)
0.1 Pied (Tessa)
0.1 Albino Kingsnake (Nienna)
2.1 Cats (Suki, Daisuke, and Kyo)
0.0.2 Leopard Geckos (Chi and Pixel)