Salvador, as the new tamandua has been named, marks the second-ever birth of the South American-native species in the zoo's history.
"Salvador is currently bonding with his mother, Rio, behind the scenes," the zoo said Thursday.
"Visitors won't be able to see him on exhibit, but he may meet them as a member of the zoo's education collection."
The zoo says southern tamanduas often are called lesser anteaters and are found in areas east of the Andes.