I like to keep Renn's ears on the longer side. One time I noticed them starting to mat but as I pretty much comb them out each night I have stayed on top of it and did have the groomer thin them 1x. Last night I noticed big mats on both of his ears so I slowly brushed and combed them out. It must have taken a good hour or more. I think it happened because he wore that cone a few nights . What is the proper technique for keeping the ears mat free. His fur is quite thick on his ears and while I think I have combed thru when you actually finger the hair you may find mats starting.