Degree Name
Master of Science (MS)
Semester of Degree Completion
1974
Thesis Director
Michael Goodrich
Abstract
Fourteen out of sixteen Heterodon platyrhinos eggs were hatched in late August, 1973. The immature snakes were manually stimulated and the resultant bluffing and death-feigning behaviors were observed. All of the experimental snakes bluffed, but only three out of ten feigned death. The major components of the bluffing behavior are spreading the neck, hissing, and striking. Death-feigning is preceded by contortions and shows variations in the positions of the mouth and tongue. The newly-hatched snakes exhibited both bluffing and death-feigning, indicating that the behaviors are innate.
Recommended Citation
Hemken, Brenda S., "Defensive Behavior of the Hognose Snake (Heterodon platyrhinos)" (1974). Masters Theses. 2488.
https://thekeep.eiu.edu/theses/2488
