Yes they can! This is not a good sign, your cat needs to be taken to a vet immediately.
White worms in cats and dogs are probably tapeworm, which is spread by fleas.
they have worms
Cats scratch, they can contract fleas and/or worms, although most other animals can get worms and fleas as well. Cats also can vomit up fur balls. They can be lazy, don't come when called (unless you have food in your hand), don't give a heck to what you say. This is usually how cats are; they are not like dogs that can be easily trained.
Yes, cats do vomit most of the time its just a hair ball but they do vomit.
Yes, cats can vomit.
Ascariasis
Cats typically vomit after eating something bad. Another reason could be a hair ball.
you have serious problems
Worms eat cats that are decomposed and they take small bites of it.
All mammals can vomit if necessary.
you catch them quick because if they are outside to long they could get tape worms they are white worms that eat your cats digestive system i didnt mean to be rude.
If you're seeing worms in your dog's vomit, they are probably round worms. They kind of look like spaghetti noodles. You can't usually see hook worms with the naked eye. You should take a stool sample to your veterinarian to determine exactly what type of worms the dog has. Most puppies are born with round worms, but hooks are much more serious.