No matter how ferocious he looks, the borealopelta is a vegan, and likely a gentle soul. His remains were found in 2017, but just hit the news causing us to do a bit of research. The particular individual found is about 18 feet long and weighs 2,500 lb. and even his stomach contents were intact. It consisted of chewed ferns, stems and twigs.
https://newatlas.com/science/dinosaur-stomach-contents-borealopelta-markmitchelli/
Photo © Royal Tyrrell Museum of Palaeontology