No pet parent likes to hear that sound: the hacking noise from the other room that tells you are going to have a mess to clean up. When your cat starts gagging, the first thought that might go through your head is, "Oh no, what did they get into now?" There are many reasons why your cat might throw up, some of them more serious than others. As a new pet parent, it is important to know the reasons your cat may be vomiting and when an upchuck warrants a visit to the veterinarian.

Hairballs: A Common Cause of Cat Vomiting
Even as a seasoned cat parent, it is important to understand the reasons behind cat vomiting. As cats age, their bodies change and vomiting may indicate something is abnormal..
Although cat vomiting might be due to eating a part of a houseplant or ingesting a piece of a toy, your cat can get an upset stomach from ingesting hair fromgrooming. This most often resurfaces as a hairball.
Although a cat vomiting up a hairball every so often is normal, there are times when you may need to be concerned. Hairballs shouldn't be painful, frequent or difficult for your cat to pass. Untreated hairballs can also go the other way and cause painful intestinal blockages in extreme cases, according to Cornell Feline Health Center , so keep track of your cat's normal routine and watch out for signs of constipation, lethargy, and anorexia if they have not passed a hairball in a while. If your cat has a consistent hairball problem, you might want to look into a cat food that is formulated for hairballs.
Cat Vomit Diagnostic Hacks
A hairball every now and then (often with foamy or yellow liquid) may not be a reason to call your vet, but if your cat starts vomiting frequently or the hairballs are large and seem to be causing your pet discomfort, you may want to have your feline friend in for a checkup.
According to the Cornell Feline Health Center, most vets start by determining if the vomiting is related to hairballs. Then they maymove to discussing possible ingestion of harmful objects or substances in your home. If the cause is not obvious, your vet may recommend additional testing such as bloodwork, a fecal examination or X-rays or an ultrasound to find the problem.
It's helpful to know that most vets will approach cat vomiting this way so that you can gather useful information prior to your appointment. When visit your vet, be prepared to describe your cat's recent surroundings, activities and vomiting frequency and appearance.