Is it normal for my 5-week-old puppy's third eyelid to be visible?

That is a very good looking puppy! It can be quite normal for some breeds,including beagles, to have a little bit of droopiness in the lower eyelids. This allows you to visualize their third eyelid, which is the bright pink membrane that you see in the photos. Your pet’s eyes appear normal. Signs of a problem would include squinting, rubbing the eyes as if they are itchy, or a discharge. As Your puppy grows, the droopiness gets less and less. Thank you for your question.

That could be Bailey's third eyelid, which is a normal part of the dog's eye anatomy. But it should not be out when the dog's eye is open, which indicates a problem. I'd have her seen by a vet for this.

I would have Maggie seen by a vet immediately. The eye is such a delicate and important structure that any problem with it should be considered an emergency. That's because leaving it untreated can lead to vision loss. The vet can diagnose what is causing her third eyelid to cover her eye, and can give her medication to treat it. I would take Maggie into an ER vet or find a vet on call to see her now.

It can be normal for the third eyelid to be slightly visible in some dogs, due to the shape of their faces and skull bones. In the photo, Ziggy's eyes look normal to me. If this is how he has always looked, and he does not have any other signs of an eye problem such as redness, squinting, or discharge, I would say that this is probably normal for him and not a reason for concern :)

It's hard to tell if what you are seeing is normal or not. Some people mistake the appearance of the 3rd eyelid as a problem, when really it is normal. Suede also may have conjunctivitis, or inflammation/infection of the tissue surrounding his eyes. He could have allergies that cause the redness and prominence of his 3rd eyelid, the pink tissue present in the 2nd picture. Without doing an exam and looking at those tissues and in and around his eye, it is impossible to tell. If he starts squinting, that is a sign of pain, so I would definitely take him in asap. I would recommend you take him in to your vet for an exam to see if he needs any topical treatment for his eyes or if what you are seeing is his normal anatomy.

Thank you for providing pictures of Lorraine's eye, she is adorable! What is showing in her eye is her third eyelid, and given that it has worsened over the day, yes, I do recommend an emergency appointment. The eye is such a delicate and important structure that any problem with it should be considered an emergency. This is because leaving it untreated can lead to vision loss. It could be that she has an eye infection or could have injured her eye causing the third eyelid to come out, but a vet can make the correct diagnosis and give her a treatment for it. Please take her to the vet tomorrow. Best of luck!

It looks like Grace's third eyelid is up more then her eye is drooping. I would recommend a veterinarian. SHe may just have some irritation or infection in her eye but she could also have scratched her cornea. With eyes, I always recommend having the animals see a veterinarian to make sure there is nothing serious going on. Thank you for using Petco Pet Education Center, formerly Petcoach.