The cub and its two beige-colored and spotted siblings are being kept in a sealed cage so the mother does not become stressed or confuse human odors with that of the newborns, which could cause her to attack them.
Her mate is being kept in a separate enclosure, as male pumas have been known to kill their young.
The vet has not had any physical contact, and the genders of the litter remain unknown.
Once the cats reach three months of age, the zoo plans to exhibit them to the general public. Thomas Belt hosts some 50,000 to 60,000 visitors each year, according to zoo management.