I always thought that a Firefox is a kind of … fox, which is not true. It is a kind of Panda.
The Red Panda or lesser panda, is a mostly vegetarian cat-sized (60 cm long) mammal. Its classification is uncertain. It was formerly classified in the raccoon family (Procyonidae), but now many experts, including Wilson and Reeder, classify it as a member of the bear family (Ursidae) or in its own family the Ailuridae. It is native to the Himalayas and southern China. Fossil evidence suggests that it once also existed in North America.
Its Western name is taken from a Himalayan language, possibly Nepalese, but its meaning is uncertain. One theory is that “panda” is an anglicization of “poonya”, which means “eater of bamboo”. Its Chinese name means “little panda,” named after the Giant Panda. It is also commonly known as the Firefox and, because of its distinctive cry, the Wah.
Have a look in Wikipedia.
Nice mascot for a nice product :-)