Q. When we studied high school biology, our teacher said more than 99 percent of animals lay eggs and only a few give live birth. That percentage seems too high. Humans, dogs, cats and cows are ...

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 ...

Have you ever wondered how tortoises lay eggs? For many temperate species, such as Mediterranean and North American tortoises, eggs typically hatch between late August and early October, though ...

Eggs are one of nature’s most fascinating creations. They come in many sizes, shapes, and colours. There are a variety of eggs ranging from the tiny specks to the giant, hard-shelled eggs. An egg is ...

Most people assume that only reptiles, fish, and birds lay eggs — after all, that’s what we learned in school. But nature always has a few surprises up its sleeve. Believe it or not, there are ...

One day I saw a collection of eggs from lots of different bird species, and I realized just how many different kind of egg shapes there really are! Here’s what science says about why eggs are ...

Q. I am doing a project on different types of eggs in the animal kingdom. Can you tell me the approximate percentage of animals that lay eggs? I know mammals do not and birds do. What about other ...

Q. When we studied high school biology, our teacher said more than 99% of animals lay eggs and only a few give live birth. That percentage seems too high. Humans, dogs, cats and cows are ...

It lays the world’s largest egg, weighing about 1.5 kg and measuring up to 15 cm in length — truly a giant among birds. Emus lay striking dark green or blue-green eggs, reaching up to 15 cm in length ...