Southern Tamandua for me. As mentioned on one of the other discussions, unstriped Northern Tamanduas aren't really a thing. It would be really strange for unstriped Northern Tamanduas to only be appearing in a few "roadside" zoos in the USA but not recorded in the wild, whereas multiple accredited zoos in the USA have unstriped Southern Tamanduas which look exactly the same as these.
(Just as a side-note it seems like the distinctions between Northern and Southern are largely distributional and cranial, so otherwise distinguishing living animals in a foreign captive setting would probably be difficult to impossible. Apparently the ears are relatively longer or shorter, but I think this would need to be determined through actual measurements and not general appearance - I can't see it in photos on the internet).
