My cat is throwing up white foamy stuff. why is this
If your cat is vomiting white foam it could mean that it is hungry and it is ejecting bile from its system. Another reason could be that the cat has been poisoned or it has swallowed a foreign object like a thread. Contact a vet immediately. For more information check out http://www.ehow.com/info_8749544_cat-constantly-vomiting-white-foam.html.
the cat is either sick. or Has Rabies
rabies is a ridiculous answer! if its got yellowish tint; it is most likely allergies or its sinuses!