The gestation period is 33-38 days, which is common for all kangaroos. The newborn is about the size of a jellybean and is little more than a fetus. Twins are rare, but cases of them have been reported. The joey will remain in the pouch about 120 to 180 days. In the wild, wallabies may live up to 15 years.
Wallabies are browsers.
The Swamp Wallaby population has declined due to the clearing of its habitat. They are also being killed for their skins and as agricultural pests. In spite of this, the Swamp Wallaby is not threatened or endangered.