Why is my senior Chihuahua weak and refusing to drink water?

Poor Chika sounds very ill! If she has been throwing up for the past three days, doesn't want to walk, and is very lethargic, she needs to see a vet right away. She could have a foreign body, severe GI illness, pancreatitis, or even cancer (which is unfortunately common in older dogs). The vet can do a physical exam, routine blood tests, a urinalysis, and possibly x-rays to diagnose what is causing her symptoms and can treat accordingly. Please take her into an ER vet now.

I'm sorry that Tiny is not feeling well. If this has just started today and there are no other symptoms of illness, you could try enticing her to eat with some plain boiled chicken and white rice or with the canned version of the diet she is already used to eating. If she doesn't start eating and drinking in the next 12 to 24 hours, I would recommend getting her to your regular veterinarian for an exam. If this has been going on for more than 24 hours at this point, especially if she's experiencing vomiting, diarrhea, or lethargy, I would recommend a vet visit as soon as possible. Small dogs are especially susceptible to low blood sugar and dehydration if they don't eat and drink for extended periods of time.

Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question about Sophie. I am worried about her, she does sound like she is sick. It's also serious that she won't drink water, which will quickly lead to her being dehydrated. Without seeing her in person, I can't say what is going on with her, so I recommend taking her into a vet today for a health check. Best of luck.

Lili is experiencing very general symptoms of disease, these symptoms could fit almost any internal condition, maybe she is suffering from nausea due to a gastrointestinal disease and maybe she is in pain, from the symptoms described it's very hard to know. i would recommend taking her to the vet as soon as possible in order to get her checked, if she doesn't show any other obvious symptoms during the examination, a blood test and possibly an ultrasound will be needed in order to try and find out what is wrong with her.

Tricia is experiencing very general symptom of disease, this symptom could fit almost any internal condition, maybe she is suffering from nausea due to a gastrointestinal disease and maybe he is in pain, from the symptoms described it's very hard to know. i would recommend taking her to the vet as soon as possible in order to get her checked, if he doesn't show any other obvious symptoms during the examination, a blood test and possibly an ultrasound will be needed in order to try and find out what is wrong with Tricia.

It sounds like she needs to be examined and treated by a vet right away. She may be getting dehydrated and need some fluids, either subcutaneously or intravenously. Your vet can also run some blood work and other tests to help determine the cause and evaluated the function of all her organs. It is very concerning that she is not eating and is very weak. I don't think this is something that should be treated at home with OTC medications. If she has a gum infection then she may need an antibiotic to treat the infection. Call your vet or take her to an emergency clinic for treatment. Hope she feels better soon!

Any continued abnormal symptoms (longer than 24 hours) warrants a vet exam. I cannot tell you what is wrong with her just by your description. There are many different things that could be causing her symptoms. Those symptoms are very vague and could be caused by any illness or disease process. I can tell you that you need to be diligent getting weird symptoms checked out especially with an older dog. Please get her a vet exam as soon as you can. They may recommend running some lab tests and/or x-rays.