Cory Redwine, 29, was called to the stand by the prosecution in the trial of Mark Redwine, who is charged with second-degree murder and child abuse resulting in the death of 13-year-old Dylan during a court-ordered parental custodial visit during the Thanksgiving holiday in 2012.
The defense also argues a wild animal could have been responsible for killing Dylan.
Prosecutors believe the father killed his 13-year-old son in 2012 over photographs.