pueblans are the squirmiest. I think that the fastest one that I saw was a scarlet kingsnake (which is actually a milksnake, don't know why it is called a kingsnake) and then you have the coastal milksnakes, such as the Calvert and the St. Mary ones, which are real livewires, but not as much as the scarlet.
I had a pueblan and he calmed down pretty quickly, for a milksnake. I found that if I cupped him in my hand instead of letting him weave in and out of my fingers, he did much better. Maybe too much space around them is scary? He never bit me, but I have heard that the musking is their main line of defense. I also found that if I went too long between handlings, for more than a day or two, he got more wiggly. The key seemed to be to hold him for 5-10 minutes each day (except post feeding times). Unfortunately, I sold him when I was thinning out my snake collection. I really do miss him and am seriously thinking of getting another one soon.
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sue