I doubt that a raccoon or a fox can chew through even ⅛" wood if it is not rotten. But i would be worried about a fox digging under the panel and a raccoon climbing over it.
I have chicken wire outside of my duck house, that i connect to a 3,000V neon-transformer when i know there's a predator lurking around. That will be instant death to a fox, raccoon or weasel and intense pain to a coyote, dog or a bear. - I just don't own a fence electrifier (yet), so i had to go with what was available. The ducks inside are protected from touching the life wire with epoxy OSB-boards.
Honestly this sounds great, I’m a little jealous.