Bohannon appears at Santa Cruz Bookshop, 1520 Pacific Ave., Santa Cruz, at 7 p.m. April 7 and with Angie Coiro at Kepler's Books, 1010 El Camino Real in Menlo Park, at 7 p.m. April 8.

Eutherians (such as humans) have a well-developed placenta and a long gestation that leads to the birth of a relatively well-developed young. The length of lactation is often similar to the length of ...

Mammals are distinct from birds, reptiles, amphibians, fish, and invertebrates in three key ways. First, all mammals have fur or hair. In some species this presents as a very conspicuous, thick coat, ...