I put a post on the other ask a Vet a question.  But I'll ask here as well.....  My 9 yr old calico female has been throwing up on occasion which seems to be when she eats too fast (dry food). It appears that she doesn't chew it very well.  This time she not only threw up food, but a clear flem-like substance as well. It was disgusting!   She seems ok the last day.  We do have 2 other calicos in the household who are younger.   What do you suppose it is?