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Today, Maddie learns about feeling comfortable. She visits the butterfly house and explains that some animals are warm-blooded and some animals are cold-blooded. She learns that a butterfly is cold-blooded and can only fly when it’s warm outside, but that our bodies are warm-blooded. Maddie heads to the penguin pool and uses her special thermal imaging camera to see how warm-blooded animals like penguins keep their body temperature the same, even when the water and air outside is cold. She learns that our bodies sweat when we are too hot and how hippos like to wallow in mud – and the mud evaporates and takes the heat away with it! Next, Maddie learns that keeping clean by changing our clothes and washing our body and hair helps us to feel comfortable. She discovers that a lemur uses its special teeth, called a toothcomb, to keep its fur clean, and she uses her special camera to see how a lynx makes itself comfortable when it’s ready to go to sleep.