The funny thing about sleep is that we all need it. It is very important and it still confuses scientists as to why. There are many different mammals on the planet and almost as many different ways to sleep, and sleep requirements. Why is it that some of the smallest mammals need the most sleep and some of the biggest need the least? Why do mammals hibernate, and some do not? How can some animals that need to breathe air, sleep underwater?
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The funny thing about sleep is that we all need it. It is very important and it still confuses scientists as to why. There are many different mammals on the planet and almost as many different ways to sleep, and sleep requirements. Why is it that some of the smallest mammals need the most sleep and some of the biggest need the least? Why do mammals hibernate, and some do not? How can some animals that need to breathe air, sleep underwater?
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Add this copy of Sleepy Time for Mammals to cart. $18.70, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2014 by Lulu.com.
Add this copy of Sleepy Time for Mammals to cart. $27.11, new condition, Sold by Ria Christie Books rated 5.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2014 by Lulu.com.
Add this copy of Sleepy Time for Mammals to cart. $51.59, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2014 by Lulu. com.
