What is the most logical next event?

How to clean a cow
Secure the cow outside with a halter or rope tied to the collar.
If possible, tie the cow to a fence or the side of a building and not a single post. That way, the cow can't walk in circles or get tangled in the rope.
You can use a cow-washing chute instead, which holds the cow's head in place, leaving you room to wash its body. If your cow has never been washed before or has a poor disposition, try tying it with a shorter rope so it is less likely to get tangled.