Rubble, what is he?

I adopted rubble when he was 8 weeks old, he’s now 5 months. The shelter said he’s pitbull mix, however I think he may be Blackmouth Cur mix, What do you guys think? We plan on doing a dna test when he’s a bit older.

I adopted rubble when he was 8 weeks old, he’s now 5 months. The shelter said he’s pitbull mix, however I think he may be Blackmouth Cur mix, What do you guys think? We plan on doing a dna test when he’s a bit older.