Russell attributed the arm-mark pattern to a dog; the prosecution challenged her analysis.
What the record shows
Russell based her opinion on photographs, medical material, and pattern recognition. She did not identify a particular animal by DNA.
Her experience, methods, report wording, and interpretation were addressed in cross-examination. Counsel also discussed a report by John Walsh that regarded an animal bite as unlikely while describing the injuries as nonspecific and lacking enough context to assign a particular cause.
Limits and disputed context
The opinion was disputed expert testimony, not an observed attack. It must not be described as a laboratory identification of the cause or a particular dog.
S34: Diamandis, Proctor messages, and Russell testimony
9:10 a.m. ruling, Diamandis testimony, Russell testimony
Open publisher sourceS36: Russell cross-examination, evidentiary ruling, and Barros
3:45 p.m. update: Nicholas Barros; Dighton condition, later photograph, report detail, and cross-examination.
Open publisher source