The cold-blooded animal our group researched was a frog. Frogs are amphibians and their body temperature is the same
temperature as their surroundings all the time. This means when it is hot out,
their body temperature is hot. If the water is freezing, their body temperature
is freezing. Frogs can be found in many different places. They can be found
just about anywhere there is fresh water, from the desert to the Arctic, on all
continents except Antarctica. Although common frogs are active both day and
night, they tend to be more active at night. The reason for this is because at
night is when the air is most humid. Frogs enjoy the time of day when the air
is most humid because of the way the humidity keeps them moist. During the
daytime, frogs sit still in moist places, like under a rotting log, in a muddy
place, underground, or in the crack of a rock. Frogs that live in areas that
have winter hibernate to escape the cold. They may burrow under leaves or mud
at the bottom of a pond or stream or they may dig down as much as a foot
underground, often under rocks or rotten logs. Frogs that get too warm on the
muddy banks of a river will either bury itself in the soft earth or seek a
cooler spot in the water. This is how frogs stay cool in the summer and warm in
the winter.
Our group learned that amphibians were the
first vertebrates to live on land and they depend on their external energy
sources (such as the sun) to maintain a stable body temperature. Since frogs
are amphibians, we thought this was an interesting fact.
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