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Unequal Sized Pupils
I have a 4 1/2 month old blue eyes Aussie. He was playing and completely fine. Took about a 10 min nap and woke up with one pupil completely dialated and the other the size of a needle. He was still acting completely fine.
Emergency vet said they don't know what would have caused it but to keep an eye on him. Internet said head trauma or chemical reaction. Neither occurred. I was with him the entire day. The last med he took was NexGard three days ago. His pupils look the same after about an hour. Does this happen to Aussies and it's just more noticeable because he has blue eyes or is he having neurological problems? I have a call into him vet but can't get in til tomorrow. He is still acting completely fine.