As it turns out, despite being herbivores (or, as humans say “vegan”), red pandas will attack animals.
These two “played” together until the chipmunk stopped moving, stuck in the fence.
I reported it to the keepers because many zoos have a policy whereby any animal that dies on zoo grounds requires an autopsy to make sure that any animal that came into contact with it wasn’t exposed to something nasty.
Sorry, not all the stories can be fun ones.