If I am not wrong, for the presa canario cropping the ears is more of an aesthetic thing only. I am on the fence right now about whether to have her ears cropped or not. I just love the way she looks as a puppy without any cropping at all. So I was wondering if after a year her ears could be cropped for instance. But for what I gather from here, it seems like it's now as a puppy or never. I am not planning to have her compete or anything , so I think I will leave her ears alone. I have seen lots of adult presas without any cropping and they look cool to me. Of course, the cropping makes them look more scary! lol