All of the following are listed in Chambers Dictionary...
Q. 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.
U. All of the following - except the upupa - are listed in Chambers Dictionary...uakari (monkey), umbrella ant, umbrella bird, umbrette (stork), unau (sloth), upupa (or hoopoe bird), urchin (sea-), urial (sheep), urson (porcupine), urubu (vulture), urva (mongoose).
Ukulele is the name of a musical instrument in English, but the word comes from the Hawaiian for �flea'...and there is always the wonderful, mythical unicorn.Xenarthra are anteaters and sloths
X. Xema are a sort of gull...Xenarthra are anteaters and sloths and Xiphias are swordfish. So, there you have an X-creature from air, land and sea.