It's a dog who likes to eat sauerkraut, and the owner made it a bowl of noodles. It's a bowl of veggie noodles, but the dog obviously doesn't like to eat noodles and vegetables. It just likes to eat the meat, and it's like looking for meat in a bowl.
The owner of the painting has been advising the dog to eat noodles without eating an acupuncture, but at this point the dog, who is already completely insinuated, has not listened to the words of the master, yet is still looking for meat in the kitchen, as if he had died and had eaten nothing but meat.
Just on the right side of the bowl after the dog had examined the left half of the meat and had finished it, it seemed as if the master outside the picture had felt like he was going to finish all the meat and that leftover noodles and vegetables would have to be stopped.
That's why the owner ate noodles when he first came out of the war, and it was better for the dog to work together. It's like a naughty little friend waiting for his parents to come and feed him, but once he's got what he wants, he's getting really smart.
It's not fake for a dog to bite his face instead of looking for meat when he's fed himself to his master.