Despite my misgivings, I bought the boys a set of zanies due to all the raves from members here. Sure enough, Gus killed the squeakers in all three within the hour, BUT he is still playing with them despite the fact that they no longer make a noise. Usually a broken squeaker is the death knell for any toy, but he is still running and fetching the zanies! Wish the squeakers could withstand my little terror, but I am thrilled that he is so thoroughly enjoying them nonetheless.