Just adding to the consensus. Our old cat ate the very first orchids I
got to bloom (Pterostylis species) I was furious, but what can you
do...If a cat wants to eat orchids, it will!

Ray wrote:
The answer is "no" to plant toxicity. Residual pesticides, sure.

Get yourself an Oncidium cebolleta, and the cat will "trip" its way away
from orchids ever again.