EMERALD TREE BOAS (Boa canina) 
Guianas. 
RUBBER BOA 
The pygmy rubber boa, inhabiting the Pacific coast of the United States, 
has received its name because, with its cylindrical, stubby form, it looks 
like a two-foot length of grayish rubber hose. This snake is very gentle. 
When frightened, it twists itself into a ball-shaped mass, so round that 
it can be rolled about or even tossed about, like a ball. 
In devouring mice and other rodents, it kills them by constriction 
before swallowing. Feeding takes place in the early hours of the day when 
the boa is most active. The rubber boa frequently climbs rough-barked 
trees and reposes for hours stretched out on a limb. 
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