It's possible you might be misremembering or mishearing a term. Perhaps you were thinking of something like:
* Hunky-dory: This phrase means "perfectly fine" or "in good condition." While not directly related to dog health, it could be used to describe a dog that is happy and healthy.
* Hunky: This is a slang term meaning "strong" or "healthy," which could be used to describe a sturdy dog.
If you could provide more context or details about where you heard this phrase, I might be able to assist you further.