The word oviparous refers to animals that lay eggs which hatch externally.In other words the female retains the fertilized eggs in her body until they hatch, so that "live" young are born. Depending on the species, the eggs of oviparous animals may be...

In most birds and reptiles, an egg (Latin ovum) is the zygote, resulting from fertilization of the ovum. To enable incubation the egg is usually kept within a favourable temperature range as it nourishes and protects the growing embryo. When the embryo...

Karen Courtemanche might be getting new neighbors, and she hears their stench is unbearable.Courtemanche lives a mile and a half from the site of a proposed 900,000-chicken farm, but she and other residents aren't putting out any welcome mats."I'm sorry, we just don't want them...

The first pregnancy achieved with egg donation was reported in 1984. Since then, demand for donor eggs has quickly increased.If you are considering donating eggs, fertility doctors say there are a number of things to remember, including the fact that it can be a time-consuming...

Customs agents have seized fossilized dinosaur eggs believed to have been smuggled illegally from China and auctioned for $420,000, officials said Thursday.The 22 eggs, each 65 million years old, were so well-preserved that embryonic raptors are visible inside 19 of them. They were seized late...

Don't count on freezing eggs to offset a ticking biological clock just yet. So say new guidelines for fertility specialists that conclude the procedure remains highly experimental even though it is increasingly offered.The recommendations are a dash of cold water for a field that proponents...