The only addition I am thinking of is maybe some article of clothing or unique feature that makes this character a little more identifiable, a hat or scarf or something. I think I always like my animal characters to have a bit of anthropomorphism like that, like the clothes wearing critters in the Uncle Remus stories- it helps tie them down to a time period.
I don't know what the final result will be. Jarrod has amazing instincts when it comes to puppet design, and I've asked him to please feel free to make changes and suggest ideas. He says he's going to show the progress on his blog which is seperate from his site and you can see it here. Check both our blogs for updates.