"Are succulents poisonous to cats?" Some are — but the difference is species, not luck. Every entry below is graded S0 Safe against primary-source records: if it gets chewed, the only casualty is the rosette. The usual suspects people actually own are covered further down.
Holding an aloe, a jade, or a snake plant right now? Those are the three succulents cat owners most often already have — and none of them belongs on the list above.