No. Cows and Cattle are indigenous to Europe, Asia and Africa, not North America. Cattle were imported to America in the late 1400's, and haven't been there before then.
North America
Same size as cows in North America.
none
Native Americans
No, they were not native to North America and neither was the horse.
Prior to the arrival of Christopher Columbus what was the indigenous population of North and South America and the Caribbean?
The first cows landed at the Jamestown Colony in North America in 1611
Only in zoos, they are not indigenous.
Wolves are indigenous to Eurasia, North Africa and North America.
Everywhere really it depends whether or not you can raise the cows and keep them alive
Yes. No different from cows being introduced to Australia or North America.
The indigenous people of Alaska and Hawaii were the first nations of eastern North America.