PHILADELPHIA (CBS) -- It's a sound dogs make that may be alarming. Similar to loud snorting, dogs can rapidly suck in air pulled in through the snout, instead of being pushed out. It's called reverse ...

It can be alarming when your dog snorts or sneezes, especially multiple times. For a dog, snorting and sneezing is a natural part of life — and some dogs even perform what is called a reverse sneeze.