I love that Kaji sleep barks! That means he is completely comfortable in his dreams to express himself, so he should continue growing in his waking hours too.
As for hardest thing to capture on film....that would apply to just about everything with my guys. Both of them are camera shy so I have very, very few shots that have captured their lively personalities. Make that none for Max. I don't have a single shot that captures the essence of the Maxman. Teddy, I have a couple.