What was the name of Mary Poppins' dog? - briefly
The name of Mary Poppins' dog is Fifi.
What was the name of Mary Poppins' dog? - in detail
In P.L. Travers' iconic "Mary Poppins" series, the character of Mary Poppins is accompanied by several animals throughout her adventures, but notably, she does not have a dog as a consistent companion. The most prominent animal associated with Mary Poppins in the books is Mr. Banks' horse, which is named Admiral Boom, and in the Disney film adaptation, she encounters various animals during her journeys, including penguins and dogs, but none of these are specifically referred to as her own pet or constant companion. Therefore, it can be concluded that Mary Poppins does not have a dog with a specific name in the original stories or the popular film adaptations.