I agree, wonder what breed they were, if any.
Pretty large at 100lbs.
My largest Boxer is 72# lbs, she’s pretty tall and not fat, the smaller Boxer is 54# and a little plump.
When my GSD was young, she was usually in the mid to high 80’srange. We keep her on the lean side now—age and poor hips.
All my dogs are female and male dogs are usually heavier/larger. Sooo...
I am guessing it probably was not a Pitt (though I am unsure of their weight range) but something as large or larger than a Boxer or GSD.
Maybe a Rotti?