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The bog turtle has a low reproduction rate; females lay one clutch per year, with an average of three eggs each. The young tend to grow rapidly, reaching sexual maturity between the ages of 4 and 10 years. Bog turtles live for an average of 20 to 30 years in the wild. Since 1973, the Bronx Zoo has successfully bred the bog turtle in captivity.
The wood turtle is omnivorous and is capable of eating on land or in water. On an average day, a wood turtle will move 108 meters (354 ft), a decidedly long distance for a turtle. Many other animals that live in its habitat pose a threat to it. Raccoons are over-abundant in many places and are a direct threat to all life stages of this species.
The southern painted turtle (C. dorsalis) is alternately considered the only other species in Chrysemys, or another subspecies of C. picta. The adult painted turtle is 13–25 cm (5–10 in) long; the male is smaller than the female. The turtle's top shell is dark and smooth, without a ridge.
Sea turtles are very vulnerable to oil pollution, both because of the oil's tendency to linger on the water's surface, and because oil can affect them at every stage of their life cycle. [159] Oil can poison the sea turtles upon entering their digestive system. Sea turtles [160] have a cycle that they follow from birth. The cycle depends on the ...
The common snapping turtle (Chelydra serpentina) is a species of large freshwater turtle in the family Chelydridae. Its natural range extends from southeastern Canada, southwest to the edge of the Rocky Mountains, as far east as Nova Scotia and Florida. The present-day Chelydra serpentina population in the Middle Rio Grande suggests that the ...
Turtle skulls vary in shape, from the long and narrow skulls of softshells to the broad and flattened skull of the mata mata. [25] Some turtle species have developed large and thick heads, allowing for greater muscle mass and stronger bites. [26] Turtles that are carnivorous or durophagous (eating hard-shelled animals) have the most powerful bites.