Best thing to do is go to a vet, I had a blood where liquid was comming out of his mouth and I was 100% sure it was RI. Ended up being I did not have the correct humid and it was the dry bark getting into his lungs and it was his way of removing the dust from his lungs. But if you can kinda roll back his lip and see if you can see bubbles forming around his mouth or out nose. Hope this helps best of luck