red big toe
By the nail? Yes, they can get kinda an ingrown nail. My Ods used to get them on his fingers all the time. I always felt guilty cutting his nails even just a little because they would always get one or more ingrown type nail, where it would get red and even after a day or so you could push a little puss out. His quicks of his nails were so far back, that even leaving his nails a little longer didn't help, but if I didn't cut them he would scratch himself up like crazy!