The new arrival for resident couple Niffler and Dora is a “rare and significant success for the European breeding programme for binturongs”, according to the zoo.
A binturong is a mammal from the viverridae family, which includes civets and fossas.
Despite the name it is neither a bear nor a cat.
The birth follows the arrival of mother Dora from Germany in April.
Gemma Romanis, head keeper, said: “Boots is already capturing hearts on the keeping team, with her sleepy squeaks and sweet personality.