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The
vertical pupil enhances the massasauga’s
night vision, and the heat sensing pit helps it
find prey. Protective keeled scales give the
massasauga a rough appearance. |
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The
rattle at the end of the massasaugas
blunt tail. |
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MASSASAUGAS
BY SIGHT
- The massasauga’s most distinguishing
feature is the rattle at the end of its blunt tail. The rattle sets
this species apart from all other snakes in Ontario (although on
some individuals it goes missing due to wear or confrontations with
predators). When the snake vibrates its tail, interconnected
segments of the rattle produce an insect-like buzz;
- The massasauga is the only snake in
Ontario that has vertical (cat-like) eye pupils;
- A heat sensitive pit on each side of
the head, between the nostril and eye, allows the massasauga to
detect small changes in temperature, and to find warm-blooded prey
such as mice and voles;
- The massasauga’s scales are keeled,
which means that the scales have a raised ridge along their
mid-line, giving the snake a rough, textured appearance.
WHAT
TO LOOK FOR:
- Length: 47-76 cm;
- Colour: brownish grey to dark grey
background with dark saddle-shaped blotches along the body;
- Underbelly colour: black with light
markings;
- Head: diamond shaped with white
stripes along jaw;
- Eyes: large with vertical pupils;
- Scales: keeled, anal scale single;
- Tail: stubby with brown, segmented
rattle;
- Reproduction: give birth to 6-20
live young;
- Young: lighter in body colour with
cream-coloured button on the tip of the tail;
- Habitat: wet prairies, bogs, swamps,
rocky areas and
dry woodlands;
- Status: threatened in Ontario;
- General Info: rattlesnakes will not
always rattle. Often they will sit motionless, avoiding detection,
until the predator or human leaves.
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