The pulse is really an expression of the heartbeat. The way you take the pulse in humans (feeling the wrist or the pulsation of the big vessels running along the neck area) is not the same with dogs.
With your dog standing (or lying on his back), you can feel the pulse by placing two fingers in the inside thigh area (groin), where the dog’s leg joins the body. You would be feeling the pulsation in the femoral artery. There is another way which can be used, if the dog is prostrate. You can press the rib cage over the heart area. If the dog can stand you can feel the chest pulse just below the elbow joint.
In passing, I should mention that if the