Bornean mountain ground squirrel 
Borneo black-banded squirrel 
Botta's pocket gopher 
Brazilian porcupine 
Brown Agouti 
Brown rat 
Bush vlei rat 
Cairo Spiny Mouse 
California deermouse 
California ground squirrel 
Cape ground squirrel 
Cape porcupine 
Capybara 
Cascade golden-mantled ground squirrel 
Caucasian squirrel 
Central American Agouti 
Central American dwarf squirrel 
Cliff chipmunk 
Columbian ground squirrel 
Common degu 
Common Gundi 
Common vole 
Coypu 
Cream-coloured giant squirrel