[PIF]

The dire wolf was a formidable predator, measuring almost five feet from head to tail and weighing in the vicinity of 150 to 200 pounds - about 25 percent bigger than the biggest dog alive today (the American mastiff), and 25 percent heavier than the largest gray wolves.

Otherwise know as short faced bear snack.

[sparklite2]

Does intra-species brain size relate to intelligence?
My little mini-doxies were as intelligent as any large dog I ever had.
And huge dogs seem to be big, lovable and dumb.