Jackson's Tree Snakes

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So, the males are bigger? Interesting. I see in the one picture, one has a more brown head, and the others is black. Is that a male/female characteristic?

There are some slight color variations from animal to animal. One of my males has a greyish belly and one of my females has silvery highlights...........

People accustomed to boids are often surprised that in many other species, such as cribos, thrasops, pseustes etc, the males are larger than the females.

My largest black tailed cribo male is about 12 pounds. He's 1/3rd again larger than my largest female at the same age. Similarly, may largest yellow tail is about 18" longer than the largest female of a comparable age.