Why is my dog weak, skinny, and can't walk on her back legs?

This is not normal behavior for such a young dog, she appears to be much narrower over her back legs with poor muscle development, likely due to pain and weakness. Please schedule a full physical exam and likely xrays of her hips and pelvis to investigate the underlying cause of her discomfort

This could have various reasons : your dog has severe arthritis of the hips, defecating (squatting and pressing) hurts, so she does not go. This in turn makes constipation and then when she wants to go it hurts so much she collapses or it presses on a vital nerve that enervates the rear legs. You will need to add fiberr to your dog's feed (canned pumpkin, not the pie filling0 and you will need to take him to your vet for an exam of his hips and possible prescription NSAIDs. Also go for regular walks with your dog, which helps loosen the feces.

Shasta is experiencing two very different issues that may not have anything to do with one another unfortunately. In terms of hind end lameness, the most common causes of this are traumatic injuries, inflammatory conditions (arthritis / tendinitis), infectious diseases, tick borne diseases, nutritional deficiencies, clotting disorders, and certain cancers. As for diarrhea, the common causes of this include dietary indiscretion, inflammatory conditions of the GI tract, pancreatitis, parasites, infectious diseases, immune-mediated conditions, and certain types of cancers. To address either of these issues if they have been occurring for a significant period of time, both blood work and imaging modalities would be needed. This doesn't sound like an emergency or anything, but if either of these problems has been persistent I would consider making an appointment to have Shasta seen sometime soon for a work-up. Hope this helps and that Shasta gets well soon!

This sounds like a medical emergency and you should have Puddin seen right away. The potential cause for her signs are a slipped disc in her back causing pinching of her nerves going to her back legs (Intervertebral disc disease), trauma, spinal infection, a spinal tumor or a toxin. The veterinarian will want to perform a through exam and localize the pain. They will also check Puddin's neurologic function which will help to determine if her signs are due to a spinal problem. If her signs worsen and she can no longer walk on her back legs, she may need an MRI or surgery. Please have her seen, good luck.

I'm so sorry Roxy is struggling with her mobility. This is common in geriatric dogs. I would recommend trialing pain medication and consulting with a rehab veterinarian. NSAIDs are often useful for dogs without kidney or liver disease. You may also ask about pain medications like Gabapentin, amantadine, or pregabalin.

It sounds like Cupcake could be having back pain or another problem with her spine. Intervertebral disc disease is fairly common in small breed dogs and can lead to weakness in the rear legs, although it is usually not episodic. It’s also possible that she is having an atypical seizure or some other kind of pain that is causing her weakness. I’d recommend having your vet examine her - it might help to video how she is walking and take it with you.

I am so sorry to hear about Diya. I would recommend getting her to a vet for examination as soon as possible. There could be many different causes for weakness in the hind legs, ranging from a problem with the bones due to development, injury, dietary deficiency; or a neurological issue such as a compression of the spinal cord due to a herniated disk, a spinal embolism, infection, tick borne diseases, and more. An examination is needed to determine the causative agent and start treatment.