How to make a Dog Cone ...for a tiny dog, easily from a yogurt container. We cut a hole in the bottom that was exactly the size of her collar. Then duct taped all the sharp edges (being sure to leave enough room for her to eat and drink). Then just used one strip of duct tape to attach it to her collar. Here she is resting comfortably, no longer being able to scratch a wound behind her ear that wasn't healing.