No, dogs should not eat mochi or any foods containing mochi. Mochi is made from glutinous rice flour, which can be difficult for dogs to digest. Additionally, many mochi desserts contain sugar, which is not suitable for dogs. Feeding mochi to dogs can lead to digestive upset, including stomachache, diarrhea, or even more severe issues. It's essential to provide your dog with a balanced and dog-friendly diet, and human foods, especially those like mochi, should be kept away from them. If you suspect your dog has consumed mochi or any potentially harmful food, consult with a veterinarian for guidance on how to proceed.