Nala has a very short/thin coat. On her chest the hair is so short and thin that you can see her skin easily. Will her coat thicken up as she gets older? I'm a little worried that if it doesn't, she will get very cold in the winter, and I would just like to know what you guys think. I do not know for sure what breeds she really is. I was told Australian Shepherd/Rottie. But she has markings of an Australian Cattle dog, and looks like an APBT, so the heritage can't really tell me much for sure.