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If you mean why are your dog's ocular globes protruding, that is a genetic inherited characteristic of the race.

However, if you are asking why your Chihuahua's pupil is excessively dilated, you should take it to your veterinarian for an examination. This can be a sign of brain damage, nerve damage or muscular damage in or around the eye.

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12y ago

What else can I help you with?