At this age get him used to the Dremel for tidying his nails. It will help a lot later to keep his nails short so as not to splay his feet. A good looking brindle that should give you lots of fun.
We bought a dremel to do his nails and he absoutely hates it. I let him look, snif and move it while it was not off and he just backs up. I turned it on and he ran away. So we will us the dog clippers for his nails, those seem to be working.
No idea, sometimes with mixes it's so hard to tell what the parentage is. I do think that your dog's head is a bit more refined than many of the pit mixes i've seen.
