Aestivation vs Hibernation
Aestivation (Estivation)![Snails Snails](http://lh5.ggpht.com/-4nRA9R30ZGo/Ul_QBIFFxXI/AAAAAAAAALo/P_FFXUthzR0/Snails%25255B6%25255D.jpg?imgmax=800)
- It is summer sleep.
- Animals rests in cool or shady and moist place.
- It lasts for hot dry day time as nights are cooler.
- Aestivators are snails, earthworms, bees, salamanders, frogs and toads, lizards, crocodiles, snakes, mud turtles, North American desert tortoises, and hedgehogs.
![Hibernating Arctic Ground Squirrel Hibernating Arctic Ground Squirrel](http://lh3.ggpht.com/-rlo1anmxlcA/Ul_QCYR6LcI/AAAAAAAAALw/VDmBn9Ugjjk/Hibernating%25255B8%25255D.jpg?imgmax=800)
- It is winter sleep in which animal passes the winter period in dormant condition.
- The animal rests in a warm place.
- It is of longer duration and lasts for the whole duration of winter.
- Both cold-blooded and warm blooded animals may exhibit hibernation. Several insects, small birds and mammals hibernate regularly each year. Californian pocket mouse, kangaroo mouse and bats are known to hibernate.