It is a minor thing, but notice the way the pig’s nipple is gripped and pulled downward before the clamp is put on it. Notice how the tit meat is held for a brief second while the clamp is attached. The pig is being subjected to a procedure which has been performed many times on many different pigs. There is nothing sexual about the procedure. A clamp is being attached to an udder. The owner is simply interested in making sure the clamp is attached correctly. Whether the pig understands the procedure or not is unimportant. Whether the pig experiences pain as part of this procedure is also unimportant. Handling females like this reinforces the correct message in their pig-brain: a female is a piece of property.