Some flying squirrels have only one mating cycle per year but others, such as the Japanese dwarf flying squirrel, have two. The time of year for mating and birth depend on the species as well.

For nearly two decades, Hayakawa has documented the lives of land and sea animals, from the elusive Japanese dwarf flying ...

Another creature with great stealth is the Japanese dwarf flying squirrel. One way to distinguish between the two is that the Siberian flying squirrel is about 20 centimeters long, while the ...

Momongas are also know as the Japanese Dwarf Flying Squirrel and, as that name coyly suggests, they live in Japan, are very small squirrels and can fly. Actually, they can't fly, but they have ...

Further south, on the Honshu and Kyushu islands, they have been replaced by the Japanese dwarf flying squirrel (Pteromys momonga). Above, two males fight for the right to mate with a female.