Found the idea to have their names in Chinese seal when I was looking for mine.
矮 (矮)ǎi 仔 (仔)zǎiǎi = short
zǎi = young kid/animal
So you get the idea... Shorty is a short dog, so to speak. ^_____^
路 (路)lù 易 (易)yìLouLou's is more or less of a direct translation from his original name - Louis. So the Chinese character didn't represent anything of him, unlike in Shorty's case.
You can get one for yourself or your loved ones or your pets (like me!!!) here: Chinese Seal.