Yes,
Most Chihuahuas can eat both hard-boiled eggs and cooked eggs, but not raw ones. It’s best to cook the eggs first because otherwise there’s a chance of salmonella since it’s more susceptible to diseases if they are left raw. However, cooking may diminish some of the nutritional value that would otherwise exist in the egg. Feeding alone should not replace a balanced diet for this reason – your dog should be fed high-quality food as well as being given supplements every day…