There are a few different airway obstruction conditions that may or may not be a problem for your bulldog. A small windpipe, nostrils that are too small or a elongated soft palate which can swell and block the wind pipe. These things are able to be fixed with surgery.
When dogs get hot they pant to release the heat from their body. Since Bulldogs have such a short nose, it's much harder for them to keep themselves from overheating. These dogs tend to get a little too excited which can also cause some breathing issues. If there is excessive barking or panting, their throats can swell causing respiratory issues.
Too much exercise or strenuous activities can cause your bulldog to overheat so you don't want to push it. You will get to know their comfort level the more time you spend with him or her.
