When does it take for the Border Collie’s ears to stand up

The Border Collie’s ears are generally half-erect, that is, semi-erect ears. Those whose ears are not erect at all or whose entire ears are erect are signs of impure blood. Generally speaking, Border Collie puppies will start to erect their ears at about forty days, usually on one side first, and then on the other side. The interval may range from one day to one or two months. Moreover, factors such as dog ear thickness, calcium deficiency, injury, inflammation, etc., will all affect the process of the dog's ears erecting. If you want to make the Border Collie's ears erect, the owner can choose to supplement the Border Collie with calcium in time to help the Border Collie. Promptly perform ear pricking.