When you think of sleeping, you probably don’t picture yourself hanging from a tree branch, floating in the ocean, or ...

Keep reading to discover the 15 animals that look like, or share similar behaviors ... meaning they’re pretty nifty when ...

sponges have been widely considered to be the earliest surviving branch of the animal tree, because sponges don't have a nervous system, they don't have muscles, and they look a little bit like ...

Source: Courtesy of Princeton University Press James Nardi: As a research biologist, I have studied the mysteries of animal ... look in nature, we see webs of connections and myriad partnerships ...

Even if real animals don't completely disappear like Thayer's painted birds ... Sequence alignment, building phylogenetic trees to look at evolutionary relationships. The course also addresses ...