I remembered a 9 lives situation I had years ago with my cat Jerry. He was wearing a leather collar and the buckle was near his chin. He was licking and cleaning his chest when I realized his lower canine tooth was caught in the buckle! Fortunately I saw this happen and tried pushing down on his jaw. That didn't work so called to my Mom to get some scissors. Jerry was really struggling during this but I was able to cut through the leather and get him free. He wore a figure 8 collar after that.