Veterinarians
aren't entirely sure why puppies go through this phase. But they do know it's perfectly normal for dogs less than 6 months of age to hiccup a handful of times throughout the day, with occurrences lasting two to three minutes.
A hiccup is a spasm of the diaphragm, explains Levitan, brought on by irritation of the phrenic and vegus nerves that run from the neck all the way through the chest and into the belly.
*Found this information on Pet Side . Com
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