Welcome! My name isXXXXX am a UC Davis graduate, and currently, a Medical Director of a veterinary hospital.
I am sorry to hear about this concern for Lizzie.
Well, as a educated guess, I would have to say no. The symptoms I would have expected are what you would expect: vomiting, diarrhea, loss of appetite, panting to suggest nausea, maybe blood in the stool.
Not dilated pupils, also known as mydriasis.
So, what would case mydriasis?
Infection, inflammatory diseases, viral conditions, neurologic problems, to name a few.
So, if this eyes
are staying persistently dilated this is worth a vet examination. Exposure to drugs, especially some recreational drugs like marijuana is another culprit.
Please let me know if there is anything I did not cover for you. I hope that information has been helpful.
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