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Awesome Animal - Common Snapping Turtle

8/20/2018

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Last summer when I was on a week-long adventure the Boundary Waters Canoe Area with my brothers, nephew, and my son, I got out of the tent one morning to find an enormous female snapping turtle trying to lay eggs right in the middle of the campsite (see photo below).

She stayed in that spot for several hours, ignoring us as we took photos and stepped around her as we went about our business around camp.


And here's the best part: When the turtle was apparently finished with her attempt to dig her hole, she headed back toward the water. The problem is, this campsite is fifteen feet above the water surface, with a large slab of rock sloping down toward the water. The turtle went straight for a place where the rock gets really steep the last ten feet to the water. She reached a point at which the slope was too steep to walk, and she hesitated. She seemed to consider this conundrum for a few seconds. Then she lunged forward and literally tumbled end over end until splashing into the water. To fully appreciate this amazing behavior, you must realize that this turtle was huge, at least 30 pounds, which made for quite a splash.


Picture

So what the heck is a Common Snapping Turtle?

The common snapping turtle (Chelydra serpentina) is a large, heavy water turtle that lives throughout the eastern half of the United States and southern Canada. In fact, North America is the only place on Earth where members of this family can be found. Although there are four species in the family, the common snapping turtle is the most widespread (hence the name, common).

I intentionally included the word "common" in the name for this email to distinguish this turtle from the larger Alligator Snapping Turtle, which lives in the southeast U.S.

Snapping turtles are perhaps best known for being aggressive when provoked. They have extremely long necks (the species name is serpentina because their neck and head resembles a snake), and they can very quickly snap out and bite with their powerful, beak-like jaws.


In fact, a few years ago I found one crossing a gravel road. I approached it to get a better look. Thinking I might move it off the road, I reached for it. The turtle didn't like that. Its head shot out at least twelve inches, and it literally leaped six inches off the ground in an attempt to bite me. I nearly fell over backward in my attempt to pull my hand back.


But of course I should point out that these turtles are NOT aggressive unless they feel threatened. If you leave them alone, they will leave you alone.

Picture

Amazing facts about Common Snapping Turtles


They are big! Common snapping turtles regularly grow to over thirty pounds (13.6 kg), and the heaviest one caught in the wild was 75 pounds (34 kg). Its close cousin, the Alligator Snapping Turtle can grow to 300 pounds (136 kg)!


They can live for a long time. Their average lifespan in the wild is about 30 years. But a long-term mark and recapture study in Ontario, Canada, suggests that they can live over 100 years.

Snapping turtles are not picky eaters. In fact, these turtles will eat just about anything they can fit in their mouths. They eat insects, worms, leeches, crayfish, snails, frogs, other turtles, snakes, fish, small ducklings and goslings, and just about anything they find that is already dead. Last week, we had a stringer of fish tied to a branch at the lake shore so that we could cook them for dinner. We went out for a paddling outing on the lake. As we returned, nearing the shore, Trish, who was in the front of the canoe, suddenly slapped the water with her paddle and cried, "get away from our fish!" A huge snapping turtle had eaten almost all of one of the fish and was trying to start on a second. Trish scared it away with her paddle (I must admit, she startled me, too), but the turtle was back a few minutes later, not willing to give up, so we went ahead and cleaned the fish for an early dinner.

Snapping turtles lay lots of eggs. This is about the only time they come out of the water. The female finds a soft bit of ground and uses her hind feet to dig a hole. She will then lay 25 to 45 eggs, which look similar to ping pong balls but have a soft, leathery shell. The eggs hatch after incubating for 75 to 95 days.


Picture

Now, here's a weird fact about snapping turtle eggs. As is true for some other reptiles, the sex of the turtle hatchlings is determined by the temperature of incubation. At lower temperature (68º F, 20º C) all the young will be female. At higher temps (about 74º F, 23.3º C) they will all be male. And in between, half of them will be male and half female.

Hatchling snapping turtles have a low success rate. Only about an inch long, they have soft shells and are quickly eaten by birds. If they make it to the water, many are then eaten by fish or other snapping turtles (hey, that's cannibalism!).

Snapping turtles hibernate during the winter. When the temperature drops to below 41º F (5º C), they bury themselves in the mud at the bottom of shallow water and remain there until the spring.

That's a long time to hold your breath! Of course, during the winter their metabolism drops to nearly zero, so they don't use much oxygen. Here's part of their secret: while hibernating, snapping turtles take in a small about of water through their cloaca (um... that's their butthole), and they get their small amount of oxygen that way. Even under normal warm conditions, they can hold their breath for over ten minutes!


Check out this video comparing the Common Snapping Turtle to the Alligator Snapping Turtle

Below is a common snapping turtle, but I don't recommend holding them this way, as they can reach their head back surprising far to bite.
Picture

One more tidbit.
Thanks to a 19th-century political cartoon, the common snapping turtle is also known as "Ograbme." The cartoon was drawn in 1808, and it was in protest to Thomas Jefferson's unpopular Embargo Act. In the cartoon, we see the president prompting a snapping turtle to bite the hind end of some poor merchant, who curses the ograbme (which is "embargo" spelled backward).
Picture

So, the snapping turtle deserves a place in the S.A.H.O.F.
(Supercalifragilisticexpialidocious Animal Hall of Fame).


FUN FACT: The word Supercalifragilisticexpialidocious originated in the Disney movie, Mary Poppins. It describes anything so indescribable that there is no other word to describe it. The song is forever etched into my memory: "It's Supercalafragilisticexpialidocious, even though the sound of it is something quite atrocious, if you say it loud enough you'll always sound precocious, Supercalifragilisticexpialidocious!" So, it's another way to say awesome!

Photo Credits:
Boundary Waters snapping turtle laying eggs - Stan C. Smith
Snapping Turtle with mouth open - Tortoise Trust
Baby snapping turtle - u/AnotherDee on Reddit
Man holding snapping turtle - Ontario Parks
Political Cartoon - Wikimedia Commons

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