My oldest snake, which is a Sinaloan milk, is 20 this year. Most of my adult snakes are in their teens. My oldest kings were a few graybands, which were 16 and 18 around their passing, and I have known of many alterna that were older than that, in other collections. Since I have more bulls and pines than kings currently, right now, my oldest king is 10.

Will Still is right, they can be 19-20, and still going strong!
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Genesis 1:1