IMO it’s not reasonable to believe a dog caused those arm injuries. They’re abrasions.
A dog would leave DNA & hair and dogs have a lower jaw. There are no punctures one would expect.
You are entitled to your lay person's opinion, but I think it is unsupported factually and on very shaky ground. You and I are not experts but there is expert evidence from trial 1 which speaks to these wounds. It is quite reasonable to believe these wounds are the result of an encounter with a dog. ie
1)The ME could not explain or account for the arm wounds
2) In trial x1 the cw never produced one medical witness to explain them.
3) OTOH, the defense produced two experts in trial x1 who opined the wounds were consistent with scratches and one, possibly two "glancing" bite marks of a dog, probably a large dog. The wounds are symmetrical and patterned. The CW did not counter these witnesses in any way, shape or form.
3) A large German shepherd lived at at the location where JOK died. This dog was known to have issues with being aggressive
4) One cw witness in trial x1 who testified about DNA, conceded briefly on cross that dog claws are not known to be good transferers of DNA. Pig DNA however, was swabbed from JOK's shirt ( dog food/snacks often include pig flesh). In this trial we can expect far more detailed testimony about dog scratches and glancing bites from the defense's experts.
5,) Again, in this trial the CW has produced no expert medical witnesses to explain the arm wounds but the defense has several very well qualified experts lined up.
6) There were no tail light pieces in the wounds, the wounds themselves were never swabbed by the ME. There was no blood or skin on the outer or inner areas of the damaged tail light. There was no blood or biological material from the various tail light shards
Even with the defense experts yet to testify in this trial, moo dog scratches and a probable glancing bite is a far, far more reasonable explanation for the arm wounds than random tail light pieces.
The cw just finished their case in chief and throughout offered no medical expert who could explain the arm wounds. Infact they elicited no testimony about them from either of the two Medicos who were called.
IMO.