Ava, a wallaby at the Cincinnati Zoo, had a surprise in store: a baby joey inside her pouch. This came as a shock to her caretakers because Ava has not bred since she came to the Cincinnati Zoo ...

It was an exciting day at the Cincinnati Zoo Wednesday as the zoo's new wallaby joey came out of its mother's pouch for the first time.

Reproduction specialists recently demonstrated that swamp wallabies ovulate, mate and form a new embryo before the birth of the previous offspring. They thereby continuously support embryos and ...

The donation of a miniscule human embryo the size of a poppy seed has given scientists an extremely rare glimpse into an early stage of human development that has long been difficult to study, the ...

CINCINNATI — The Cincinnati Zoo is welcoming another bouncing bundle of joey to its growing family of wallabies. A baby Bennett's Wallaby, also known as a joey, is expected to emerge from his ...

The Cincinnati Zoo will soon be welcoming another joey to its wallaby family — and it's come as a bit of a surprise.

Researchers show that female swamp wallabies ovulate, mate, and form a new embryo prepartum, while continuously supporting conceptuses and young at different development stages before and after birth.

Fortunately, wallaby embryos progress through development on a predictable trajectory, enabling researchers to calculate their age, almost to the day, based on size alone.

The female swamp wallaby, native to eastern Australia, is the only mammal that remains pregnant for the entirety of adulthood, according to a new study.

COLUMBIA, S.C. — Over at Riverbanks Zoo & Garden, a Tammar wallaby joey is out of the pouch and the zoo says they want your help in naming him! The parents, Simone and Bandit, arrived at Riverbanks in ...

Swamp wallaby females can spend all of their adult lives in a permanent state of pregnancy, conceiving a new embryo while still carrying a near-term fetus.