my jack russel dog puts his head down and snorts through his nose. this coincides with a cough as if he is trying to clear his throat and a runny nose.
Could be what is known as 'reverse sneezing' -if you hold your hand over the dogs nose and run the throat it should stop. Sometimes caused by a soft palate. If you google reverse sneezing you will find some information and some youtube videos that show dogs doing it, so you can see if its the same thing.
the same happens to my dog particularly when she is excited.it doesnt happen in general just when shes very excited.
i just put it down to old age as shes just turned 10.i guess its the same way that older people end up coughing after a good laugh
my dogs done it for ages and it never gets any worse
that said a trip to the vet might put your mind at rest
hope all goes ok with him
My wee miniature Pinscher has been doing this and i just assumed she had snorted water when at her drinking dish, no i know what to do when she does it again, bless her wee soul thanx for this answer, very helpful