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 ...

Snakes, like most reptiles in the world, are oviparous. This means that rather than producing live young ones, the way mammals do, snakes produce an immature single cell — an egg. Most snakes follow ...

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 ...