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 ...

Monotremes are mammals that lay eggs and do not carry their young in a womb. They include species like the platypus and echidnas. Egg-laying monotremes may have retained certain traits from their ...

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 ...

The identification of a key gene in monotremes has increased our understanding of why the stomachs of platypuses and echidnas are atypically small, non-acidic, and, in the instance of platypuses, lack ...

Add Yahoo as a preferred source to see more of our stories on Google. For the first time since 1961, researchers have rediscovered the elusive Attenborough’s long-beaked echidna in the remote ...

DEAR JOAN: We enjoyed your story about Annie, the peregrine falcon that lives on the Cal bell tower, and it sparked a discussion about how old Annie is and how long she can keep laying eggs. We ...

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 ...