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What caused my puppy's eye pupil to constrict then normalize?

Updated On September 23rd, 2025

Pet's info: Dog | Pit Bull Terrier | Female | spayed | 2 months and 22 days old | 30 lbs

We have an alomst 3 month old pitbull puppy and Sunday night after she woke up from a nap we noticed that the pupil in her right eye was very small.Almost as small as the tip of a toothpick. She was playing with our 1yr old Boxer and I know that one of them hit the crate but none of them cried or yelped. In the beginning it seemed like she couldn't really see with that eye cause she walked against the closet but after about 1hr it went back to normal and shes good now What could've caused this?

1 Answer

Most Helpful Answer

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Answered By Megan, DVM, CVA

Veterinarian

Published on September 26th, 2017

This could have been caused secondary to some head trauma. If she hit her head hard then it could have cause the constricted pupil. Also pain in that eye can cause similar symptoms. If she is back to normal now then I would just keep a close eye on her. If she favors that eye, walks funny, or the pupils are still different sizes I would have your vet take a look at her to ensure she is okay. Also make sure she is still eating/drinking normally. I hope this helps!

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