Yeah I was gunna say some plants are toxic to certain pets. And if cats are super into destroying your plants it's probably only a matter of time before they find yours. Although I am not sure if this is a ratio thing (like chocolate) or what - because I only know it. I don't have any personally.

But also gj on this! I am not sure but did you add drainage? I know succulents need only a small amount of water so perhaps it's not such a big issue. Just was the first thing I kicked around.