Have Cat Questions? Ask a Cat Vet Online.
Thank you for using Just Answer. My name is Rebecca. I am a veterinarian and will do my best to help.
Hydrangea may cause stomach upset, vomiting and diarrhea, if much is eaten. If none of the leaves are missing, they probably did not get enough to make them sick.
Let me know if I can answer anything else and if this was helpful!
I have not heard back from you; I hope you were able to see my response! Please let me know how your cats are doing and what other questions I can answer.