A mom to be could barely believe what she was seeing when she went for an ultrasound to get a closer look at her unborn twins. Michelle de Bruijn, from Amsterdam in the Netherlands, was 14 weeks ...

Meng Meng, Berlin Zoo's female giant panda, is expecting twin cubs, an ultrasound examination has revealed, the zoo authorities announced on Tuesday. "Following weeks of tense expectation, there was a ...

The Cincinnati Zoo shared an update last week on the "extremely rare" pregnancy of one of their animals. The zoo announced last month that 10-year-old southern tamandua Isla is pregnant with twins. On ...

Twins—smaller at birth, on average, than singletons—start out smaller in pregnancy than was previously known, according to a study by researchers at the National Institutes of Health (NIH). The ...