This is going to sound mean, but I'd ignore it. An otherwise healthy dog will not starve itself to death. Around my house, they eat what is offered or they wait until the next meal time. Only Paxil gets special offerings to entice her to eat and only because she is not an otherwise healthy dog. She has major health problems.

Also many dogs eat much less in warm weather. If it's hot where you are, they may just not feel like eating. Just make sure they have water available at all times and are drinking it.