Not by one person and not very easily either.
Learn to grammar. The pyramids in Egypt were never "pushed over."
Can cows bark and roll over? Can cows bark and roll over?
Yes, there are currently cows all over the world.
Many types of cows originated in Europe. These cows can just reproduce, but other cows can be imported from all over.
You push it over
Cows have existed for maybe a little over 5000 years.
A parallelogram
Dairy cows are found all over, not just on islands.
It depends on how large the ranch is. A ranch that is only 100 acres may only have 50 cows; "real" ranches that are over 1000 acres in size will have over 500 cows.
No, cows are pretty heavy and stable, so when the wind stops blowing, they don't fall over.
A square.
parallelogram