border terriers have a wiry coat, tht doesnt need to be brushed,
you can brush it like occasionally to make it look smarter,
borders have a coat that needs to be stripped twice a year, which is the stage i've just reached with harley, his coat will start to fray where it will become all fuzzy and all his hairs will stick up,
you have to pull out all the hairs tht are sticking up as they are the dead hairs that need to be stripped, also its made easier by the fact the hairs turn white that need to be removed.
this needs to be done twice a year and can take up to 7 hours to fully complete, i just do it for like half an hour a day.