Help with a problem with the Llama?

If he is horkin down food, he is probably regurgitating some of the feed and its sticking. My geuss would be there are pellets in the feed and they are dry and sucking up moisture and expanding some before he regurges em so hes 'coughin' a little louder cause he has to bring em up. As long as he is eating and happy and nothing is coming out of his nose he should be fine. Double check the water cause they will not touch anything with poop or dirt in it :)