Apologies for any duplication with earlier answers, but all of the following are listed in Chambers Dictionary...quagga (a now-extinct ass), quahog (clam), quail (bird), quarter-horse, queen (+ bee and cat), queest (bird), quelea (bird), quetzal (bird), quey (cow), quink (bird), quinnat (salmon), quokka (wallaby), quoll (marsupial and cat). And, of course, you can always add �quadruped, meaning any four-footed creature.