I'm not convinced that this is "vomit" and a picture might not help much...what does it SMELL like???
IF it's vomit and it's brownish-black, your snake likely has internal bleeding...you need a vet's help a.s.a.p.!
If it's loose (unformed) stool, that is fairly normal for a snake that's just eating rat fuzzies.
Does it smell like feces? Or does it smell putrid (& makes YOU want to hurl) like vomit? My computer is not "scratch & sniff", so even a photo won't help much...we need more input.
Did you see or hear him vomit? It sounds like you're just assuming...and it's very rare for a snake to vomit.![]()