Food safety
Can dogs eat plain cooked rice?
Yes — fine in small amounts
Bland and easy to digest — often part of what a vet suggests after an upset stomach.
How much
Mixed into a meal
Being honest about this
Dogs differ, and amount matters — a crumb of something rich is not the same as half a packet. Treats of any kind should stay under a tenth of what your dog eats in a day. If you're unsure, your vet would far rather take the call.