Why is my 6-year-old dog suddenly sleeping a lot and not eating?

I would definitely recommend some blood work, if this hasn't been done recently. Older dogs are prone to a number of health issues that can cause decreased appetite along with being less active - chronic kidney disease and hypothyroidism are two possibilities that are both very common. In many cases, these issues are treatable (at least to some extent) once a diagnosis is made, so it's well worth checking for them if you can - hopefully, there are some things you can do to make him feel better for as long as possible, even though he's getting older.

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Rudy! Any change in behavior or appetite in an older dog raises concern. The symptoms are non-specific. Possible reasons are: pain, fever, nausea. These things could be causes by arthritis, lyme disease, kidney, liver or gall bladder problems or even cancer. I recommend an exam by your Vet and full blood work and urine to try to find out what could possibly be wrong. I hope this helps and I wish Rudy a speedy recovery!

Poor Pocholo! It definitely sounds like he isn't feeling well for some reason. Unfortunately, these symptoms are very vague and could be caused by almost any type of illness or injury, so there's no way to say what might be wrong without being able to examine him. I would recommend taking him to the vet for a check-up as soon as you are able to - he/she can do some blood work or other testing if needed to help determine what's wrong and get him started on appropriate treatment for the problem.

Hi and thanks for posting. Sounds like this is unusual behavior for Ruby and certainly is concerning. There can be a number of things that may be going on here and it is very hard to say what exactly is the cause without examining Ruby in person. I would recommend Ruby sees a veterinarian for a hands on exam as soon as possible to help pinpoint where the problem is. Your veterinarian may also recommend x-rays, blood work, fecal testing, or other tests to aide in an accurate diagnosis.

This sudden change in behavior is quite concerning that Fudge is not feeling well. I'm concerned that something serious may be going on. I would have him seen by a veterinarian as soon as possible for an exam and bloodwork.

Hi. If he is acting abnormal, and its notike him, I would recommend an exam and labwork by your veterinarian. There are many things that can cause lethargy unfortunately. So without more information and testing, it is hard to say what it could be

Thank you for submitting your question regarding Moxie. I think that her sudden change in behavior is worrisome. Dogs can slow down as they age. However, she is only middle aged. Plus age changes are gradual. Not as dramatic as you have described. I recommend that she sees a veterinarian. I worry that she is painful somewhere. For example, neck and/or back pain is common in small and medium breed dogs. Arthritis or a soft tissue injury could also explain the signs you are seeing. The veterinarian will carefully examine her. X-rays may be recommended. Based on these results, treatment can be started to help her feel better. In the meantime, keep her quiet and do not give any over-the-counter pain medications as these can be toxic to dogs. I hope this information helps!