MAMMALS OF OHIO f i e l d g u i d e

DIDELPHIMORPHIA
ORDER
Didelphimorphia
M
arsupials are a fascinating
group because their mode
of reproduction is unique among
mammals. A chief characteristic
of marsupials is the presence of a
marsupium, or pouch, on the abdomen
of the females. Unlike most mammals,
marsupials, such as opossums, are
not fully developed when born. The
premature young are equipped with
tiny front legs so that they can crawl to
the female’s pouch immediately after
birth, where they will continue to grow
and develop.
Opossums are common inhabitants
of the Western Hemisphere. They are
among the oldest and most primitive
mammals in the world. Opossums
have long and scaly prehensile tails and
an opposable toe on each foot that acts
much like a thumb. These characteristics
allow for a certain dexterity in
opossums, which helps when climbing
trees and invading trash cans.