Saved a dog using the heimlich once. Actually had to talk my sister through it on the phone. Her dog was choking on a swollen rawhide, staggering, near collapsing, she was holding the dog up, tongue was blue. Dog was about 55 pounds. I had her stand over top of the dog, straddling her, facing same direction as the dog. Then put her arms under the dogs chest, just behind her elbows and give a quick thrust upwards. It took a couple of tries to get it and do it hard enough, but when she did, the rawhide popped out of the dogs mouth, flying across the kitchen floor. By then she was completely holding the dog up. Immediately she started gasping and quickly came around.