We are more familiar with animals that hibernate and those that aestivate.    From LearnThat.org. 

These snails aestivate on the surface fully exposed to the sun.    From Wordnik.com.  [Archive 2006-04-01] Reference

According to the paper, some species of these frogs may aestivate in the wild for more than a year waiting for the rains.    From Wordnik.com.  [Archive 2006-04-01] Reference

The Australian Alps are also known for the annual migration of Bogong moths (Agrotis infusa) which aestivate in the mountains each summer.    From Wordnik.com.  [Australian Alps montane grasslands] Reference

The multi-layered cocoons form from outer epidermal cells that the frogs seem to shed in layers; the longer they aestivate, the more layers they add.    From Wordnik.com.  [Archive 2006-04-01] Reference

In areas where the climate is the Mediterranean type, land snails aestivate during the dry and hot summers and are active during the fall, the mild winters and the spring.    From Wordnik.com.  [Archive 2006-01-01] Reference

During the dry Mediterranean summers most Albinaria species aestivate attached to rocks and their unintentional human-assisted transport on building materials have been documented.    From Wordnik.com.  [Archive 2006-01-01] Reference

Animals & Wildlife During which season is an animal most likely to aestivate?.    From Wordnik.com.  [Answerbag: Latest Questions in Question Categories] Reference

For five years he wrote the daily word sent our as the Word of the Day at yourDictionary and since 2004 he has been writing the Good Word at alphaDictionary. aestivate.    From Wordnik.com.  [GeekLikeMe.net] Reference

One characteristic of A. caerulea is their tendency to aestivate in groups, usually stuck to each others’ shells.    From Wordnik.com.  [Archive 2006-07-01] Reference

To very gently suggest. aestivate.    From Wordnik.com.  [2009 January 28 | NIGEL BEALE NOTA BENE BOOKS] Reference