My puppy has red eyes and is underweight. What could be wrong?
Welcome to Petco Pet Education Center, formerly Petcoach! I can understand your concern. Please repost your question with a picture of your pets eyes so that we can give you an accurate assessment of Simba. Red eyes can be caused by just about anything including: allergic conjunctivitis, corneal hemorrhage, raised 3rd eyelid, etc. These are all treated differentyl and typically require a vet visit to treat.
Weight loss in puppies is typically caused by intestinal parasites. I would suggest giving him a broad spectrum dewormer from your local pet store or feed store OR getting his stool tested by your vet is ideal to determine if he does have worms and what specific dewormer he needs.
I am unsure what brand of food you are feeding now, but I would also recommend feeding him a high quality large breed puppy food such as Royal canin, Hill's Science Diet, Evo or Eukanuba.
We look forward to hearing back from you soon with a photo of Simba's eyes. Take care!
Updated on September 23, 2025