Animals produce offspring by two principal modes of reproduction. Vivipary (or viviparity) means producing live young — readily recognized as living because newly produced offspring wriggle, squirm, ...

Some animals, like Komodo dragons and sharks, were found to reproduce without mating, a process termed parthenogenesis. California condors, stick insects, blind snakes, tardigrades, and some fish have ...

In a lab at the University of Sydney, a female yellow-bellied three-toed skink first laid eggs, then gave birth to a live baby, all part of the same pregnancy. This is the first time biologists have ...