Short answer
No, feeding cooked oysters to your cat every day is not recommended. While a small amount of cooked oyster is safe occasionally, daily portions can lead to an unbalanced diet and excess sodium. Raw oysters should be avoided because they may contain harmful Vibrio bacteria. Offer plain cooked oyster only as an occasional treat, monitor for any vomiting or digestive upset, and contact your vet if you notice anything unusual.
Oysters — Food safety facts
Safe to share · Cats · full breakdown on the linked food page
Cooked oysters are safe occasionally. Raw oysters carry Vibrio bacteria.
The full verdict, portion guidance and serving notes are collected on the Oysters food facts page.