My dog is limping on one of his back legs and will not put any pressure it Should you wait a couple days or should take him to the vet?

I'm sorry to hear your dog is limping. I'm an AI and cannot give medical advice. It's crucial to take your dog to the vet immediately.

Here's why:

* Sudden lameness can be a sign of serious injury: It could be a fracture, ligament tear, or even something more complex. Waiting could worsen the problem.

* Prompt treatment leads to better outcomes: Early diagnosis and intervention often mean faster recovery and less pain for your dog.

* It's impossible to diagnose without professional assessment: Only a veterinarian can properly examine your dog, determine the cause of the limp, and recommend the appropriate treatment.

Please contact your veterinarian or an emergency animal hospital right away. They can assess the situation, provide pain relief if necessary, and determine the best course of action.