What is important is the perspective of a five gram frog.
....exactly 
A buddy of mine has been doing feeding trials with Diadophis p.regalis over the past few years on various colubrids. most of all of them succombed to the bite within several minutes to as long as an hour or so. the bite site is usually discolored and swollen when examined later. So, to a small ectotherm these guys might as well be elapids with a fancy paint job...

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Cheers
Lateralis
"I would rather be precisely wrong than approximately right"
Marion "Doc" Ford

