Another guess would be GSD/Akita but the flopped ears made me lean more towards lab. But here is a GSD/Akita mix I found while looking around too. I really don't see where people see pittie. A broad head with powerful jaw is an Akita trait too, and all the pittie mixes I've seen were shorter/stockier dogs whereas Camen is lean, long and leggy. I bet people would have guessed pittie mix for this GSD/Akita mix too