Saint Bernard puppy at 7 months wolfing down his food in Guinness World Record time. Never saw an animal eat so fast and be so hungry. It's was this way every time. Reason was because he was the omega of his litter and his brothers that grew up with him, stole his food and bullied him--- Yes even dogs get bullied in the school yard. Ever been to a dog park?
He had to eat fast to get any; thus turning to 'poo' eating to make up for appetite (Gross!) which took a long time to break. It took him months to realize no one was going to steel his food again after living with me.
"Feeding The World--- One Animal At A Time" Dolph C. Volker