Why is my cat lethargic, not eating, and dry heaving bile? Urgent?

It's really difficult to know for sure without being able to examine her. Given that she hasn't eaten for two days and is lethargic and vomiting, I have to recommend that she be seen by a vet as soon as possible. This could indicate a severe disease, or toxin ingestion. In both cases, her condition can diminish rapidly if not treated soon enough. If you have further questions or need further clarification, then you may consider having an online consult with one of our vets on Petco Pet Education Center, formerly Petcoach. This way, you can send unlimited pictures and have a text conversation with a vet. I hope that helps and Nibbler gets better soon.

Poor Moe! From what you're describing here, I'm afraid he sounds quite sick. Vomiting, not eating, and acting lethargic are always very concerning symptoms, especially since he's been sick for 2-3 days now and seems to be getting worse. Unfortunately, these are very vague symptoms that could be caused by almost any kind of illness, so it's hard to say what might be wrong without being able to examine him and run some tests. I do think that this sounds like a serious, potentially life-threatening problem that shouldn't wait until tomorrow, so I would recommend taking him to an emergency clinic today to be seen. If you're not sure where to go, try calling your regular vet's office - their voicemail message should have contact information for your nearest ER or an on-call doctor for emergencies.

As your cat has not been eating for a few days now as well as not drinking, this is an emergency. Cats can get liver disease from not eating for more than 2 days and not drinking will make them dehydrated and feel even worse and less inclined to drink and eat. Vomiting bile can be a sign of chronic or acute pancreatitis. There are some diseases that will have to be ruled out (can be done easily with a blood test), such as kidney disease and hyperthyroidism and dental problems. I think taking her to an emergency clinic is definitely warranted.

This is a medical emergency, and you cannot do anything at home for Kitty. He has to see a vet now. Please take him into an ER vet clinic; if there isn't one in your area, there will be a vet on call for emergencies. The information to reach that vet is found on a clinic's answering machine or website.

I would make it a point to take Rron to the vet right away. These are concerning symptoms indeed. If he is constipated or even obstipated (unable to defecate) then they will need to place a rectal enema (sometimes under a mild sedative) to evacuate out his colon.

These symptoms can be caused by a range of diseases, and are often accompanied by severe dehydration. Without an exam and some testing, I can't make a diagnosis, and it is illegal for us to make specific recommendations on medications. You should call your local vet for further advice.

I would err on the side of caution and get them seen today if you can, tomorrow, especially if they don't seem better. The vomitus looks like a hairball to me, but it's hard to tell. They may have overeaten, but unless that's something they already do, given the opportunity, I don't see that being as likely as something else, possibly getting into something they shouldn't have. Your vet will do an exam, possibly bloodwork, and maybe more//other diagnostics depending on what they find. Based on these results, your vet will have a better idea of what's going on and be able to recommend a treatment plan if needed.