I've thought about a cow, but what kind of fence is best?"
I would use a cattle fence with two rows of barbed wire fence at the top.
If you go to the tractor supply company web page you can see the different choices of fencing and down along the right side of that site, they have a fence calculator - it will help you find out how many posts and how much fence you will need for your project.
I would use a cattle fence with two rows of barbed wire fence at the top.
If you go to the tractor supply company web page you can see the different choices of fencing and down along the right side of that site, they have a fence calculator - it will help you find out how many posts and how much fence you will need for your project.