Your goal is not to get the "best" score from the neuropsych - it's to get the most accurate score. So you shouldn't try to cherry-pick his best work. You are bringing stuff that shows how he is doing in different areas. You might clue in the tester to ask him about animals when she is chatting with him to get to know him, not so much to show an academic strength as because it's an interest area for him and he will feel more comfortable talking to her about it.