What's wrong? My dog is scratching, panting, shaking, and collapsing.

These can be symptoms of many serious medical issues, anxiety, fear, pain, neurologic disease, infection, etc. I would recommend that you have him checked out by a vet to see what could be going on. After a thorough physical exam and discussion of his recent history, the vet may recommend diagnostics, such as blood work, x-rays, ultrasound, etc. to diagnose the cause.

It sounds like your dog needs to be examined by a vet to determine the cause. It is very concerning that he can't stand on his own and collapses. Your vet can run blood work and take an x-ray, if needed, to diagnose the problem and then determine the best way to treat. He could have a problem with his spine, heart disease, metabolic, endocrine problem, etc. Please call your vet and have him seen as soon as possible.

It sounds like she should be examined by a vet to determine the source of her pain. She could have neck or back pain, arthritis, abdominal pain, etc. and your vet should be able to localize the pain and decide the best way to treat. She may need an anti-inflammatory and your vet can prescribe. Do not use any human OTC pain relievers as they can be toxic to dogs.

I can certainly see how this would be very alarming to witness. The symptoms you describe may be related to a disease process affecting an organ system (more often the neurologic (seizure event) or cardiac (heart event) systems). What i would recommend is a visit to your family veterinarian for a physical exam, to discuss the events, and to discuss additional testing (like bloodwork to rule out organ changes). It is also extremely helpful to get a video of an event so that your vet can watch it. Also, given the age of your pup, make sure there is nothing new in the environment that he could be snacking on that may be toxic to dogs (plants, etc.). I hope this helps and thank you for using Petco Pet Education Center, formerly Petcoach!

I would recommend that you have Cassie examined by an emergency vet as soon as possible. Shaking can be caused by a huge list of things, and she needs to be thoroughly examined by a veterinarian to see what could be the cause.

Since she can't talk and tell you why this is happening, I recommend to have her examined quickly by the veterinarian. It's possible she is in a lot of pain and that's why she is acting this way. It's not likely old age. I hope the doctor figures it out quickly. Please feel free to post any additional questions.

This is a quite generic but concerning sign. Differentials are many, from gastrointestinal diseases (infection/inflammations often dietary related) to any disease that can spread systemically (causing lethargy for example) like infection, and anything that can cause pain/discomfort. A check up is needed if these vague signs last for more than 24hours. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.