In traditional Chinese the character 獨 is used.
It's sad, but no one wants an dog that looks like an insect. So they are forced to be independent.
Nobody would want a DOG 犭full of BUGS 虫. He will have to live alone 独 (Seen on www.hanzibox.com)
If a dog 犭is full of insects 虫, then he must be living alone 独 （in the streets, homeless).
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Definitions for 独 pronounced as dú