Rod Williams / Egyptian spiny mouse {Acomys cahirunus} captive

Claus Meyer / Punare (Trychomys aperoides) parent and young emerging from burrow, semi-arid region, Caatinga ecosystem, Brazil

Rod Williams / Arabian spiny mouse {Acomys cahirinus} from SW Asia

Nick Gordon / Spiny rat in hollow log den {Proechimys steerei} Amazonia, Brazil, South America returns to

Mark Moffett / Neotropical Spiny Rat (Echimyidae), near Manaus Brazil

Pete Oxford / Yellow-crowned Brush-tailed Rat (Isothrix bistriata) in tree trunk, Yasuni National Park, Amazon Rainforest, Ecuador

Guy Edwardes / Coypu (Myocastor coypus) feeding in pond, near Bratsigovo, Bulgaria. May.

Doug Allan / Beaver (Myocastor coypus) dam in summer with lake built up behind, Ushuaia, Beagle Channel, Tierra del Fuego, Argentina.

Tony Heald / Nutria (Myocastor coypus) swimming. Camargue, France. June.

Gabriel Rojo / Coypu (Myocastor coypus) standing in shallow water, La Pampa Province, Patagonia, Argentina.

Roland Seitre / Coypu (Myocastor coypus) Pont de Gau Ornithological Park, Camargue, France. April 2011

Edwin Giesbers / Close-up of Eurasian lynx (Lynx lynx) feeding on dead Nutria (Myocastor coypus), Gerrmany. Captive. March.