I think we can only hope that Britax decides to add leopard, zebra, cow, snake, or other animal prints. They have had some cool animal print covers on their other seats in the past, so we can only hope that they will release some fun animal covers for the Frontier.
If I recall correctly, animal prints in the past have included:
Big Cat
Artic Cat
Top Cat
Zebra
Crocodile
Cowmooflage
Cougar
Safari (not really an animal print, but related to animals)
Lazy Days (not really an animal print, but it was kind of like an elephant skin)
There might have been others. I would have to check the list of Britax covers.