6 Animal Species that Mate for Life: Media

Find out who’s in it for the long haul.

Images

Beaver
Ecologists often refer to beavers as “ecosystem engineers” because of their ability...
© annette shaff/stock.adobe.com
Eurasian beaver
Eurasian beaver (Castor fiber).
blickwinkel/Alamy
gray wolf
Gray wolf (Canis lupus).
© Jeff Lepore/Photo Researchers
gibbons (family Hylobatidae)
Gibbons differ from great apes in a number of physical ways. Some of the more pronounced...
© Sumruay Rattanataipob/Shutterstock.com
Macaroni penguins
A nested pair of macaroni penguins (Eudyptes chrysolophus).
© Serge Ouachée
sandhill cranes (Grus canadensis)
Sandhill cranes (Grus canadensis) are 35–43 inches (90–110 cm) long, with...
© ElementalImaging/iStock.com
bald eagle in flight
Bald eagle (Haliaeetus leucocephalus).
Hemera/Thinkstock