What is Tear Staining? When you look in the corner of a dog’s eyes, you may notice a red/brown discoloration in their tears. This comes from porphyrin, iron-containing molecules produced by the body when it breaks down iron. Porphyrins are excreted through the gastrointestinal tract, urine, saliva, and tears. All dogs have some porphyrin in their tears, but some have more, and the staining is more noticeable, especially in white or light-colored dogs. What Causes Tear Staining in Dogs? A common
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What is Tear Staining? When you look in the corner of a dog’s eyes, you may notice a red/brown discoloration in their tears. This comes from porphyrin, iron-containing molecules produced by the body when it breaks down iron. Porphyrins are excreted through the gastrointestinal tract, urine, saliva, and tears. All dogs have some porphyrin in their tears, but some have more, and the staining is more noticeable, especially in white or light-colored dogs. What Causes Tear Staining in Dogs? A common
21K viewsMay 6, 2024
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