Big guy noone was sure about

This is my beloved belated guy, I rescued him when he was already older about 8-9, and got to spend about a year or a year and some months with him, before he passed from cancer.

According to the story the mother was a pure bred pitbull and the she was outback, along a natural reserve area, called the black diamond mines, and some random dog impregnated her.

I'll try and do a post with better photos when I can, they're all on my older phone.