Such an event would occur too infrequently for a person to witness. In the case of mammals, the best-studied group of animals, the fossil record indicates that the “background” rate of ...

And humans - like you and me - are animals too! Animals can be sorted into different groups… MADDIE: Birds lay hard-shelled eggs and baby birds hatch out of those eggs. All birds have feathers ...

Bookended by extinctions, this era saw huge shifts in the diversity and dominance of life on Earth, ushering in the appearance of many well-known groups of animals that would go on to rule the planet ...

The production of transgenic livestock has the opportunity to significantly improve human health, enhance nutrition, protect the environment, increase animal welfare, and decrease livestock disease.