My three cats have ruthlessly mangled four wrapped condoms.
Well, at least one of them did. Since I did not catch anybody in flagrante, but rather noticed the results of their actions, I cannot say who did that. One cat? Two? All three?..
I also cannot tell what prompted it. It happened all of a sudden. Until the cats mangled the condoms, the condoms had been on the floor, under my bed, for several months without provoking undue interest on the part of the cats.
My recommendation to cat owners is to store condoms in a drawer, out of reach of cats.