I was eating tortilla chips one day and i broke a little piece off for ross to nibble on...well of course he loved it, so i broke off another little piece for him..

(spoiled baby

) anyways, i had him on the couch w/me and i noticed he was doing something very weird w/this head...at first i thought he was bobbing it (begging for more) but it was more than that, and well he vomitted. at least maybe...ive heard ppl say that sometimes their fids will reguritate for their "mate" and not to provoke this behavior...but how do you tell the difference? b/c if it is in fact vomit, he's off to the vet....he did like 3 times, and then he was done....hasn't since...but i want to be sure of what exactly to look for and the difference.
thank you