Definitely true.
The other thing about rat size... man IDK. I was in Panang Malaysia and saw a dead rat in a drain that blew my mind it was so large. It was no doubt in my mind over 2lbs. It was nasiating to see, and I’ve seen rats in DC, NYC, Paris. The articles claim of 1lb 13oz might be correct but it sure seems they must be extremely light for their size.