Can't imagine why but my oldest shar-pei Sweetie-O has a thing for remote controls( not a good toy and we have to hide them from her)two of my dogs Sweetie-O (when she was a pup) and Matilda love bugs my boy Fang-Chu however is afraid of bugs. But I'd have to say, between the three nothing beats a stinky sock . Iv'e also bought my dogs a couple toys they unanimously hate, a yellow ring chew toy, and an orange ball.