My baby Pete is now 1.5yrs, when we first brought him home at 12wks he did hiccup (no clue how to spell that) several times throughout the next few weeks but he did grow out of it. Ive heard other people on here talk of their puppy hiccuping as babys too. Pete also reverse sneezes often it sounds like a backwards snort, like a pig. The reverse sneeze is harmless and you can supposedly get them to stop by putting your finger over their nostrils so they breath through their mouth, but I can never get Pete to sit still for that.