Animals with a backbone are called vertebrates. Animals without a backbone are called invertebrates. Vertebrates and invertebrates can be sorted into smaller groups. Vertebrates, for example ...

A look at the strongest, biggest, most numerous, and just weirdest dental situations on the planet.

Vertebrates are animals that have a backbone inside their body. The major groups include fish, amphibians, reptiles, birds and mammals. Invertebrates don't have a backbone. They either have a soft ...

Animals are classified in a variety of ways. Basically, they are divided by being vertebrates (most having a backbone) and ...

and specific brain regions are devoted to this activity in both invertebrates and vertebrates. The Nervous System and Behavior Simple animals, like sea jellies, have direct neural connections ...

With over 20 quintillion animals on planet Earth, there is always something new to learn about and explore. Let's start with ...

But not all scientists agree that invertebrates feel anything analogous to vertebrate—much less human—emotion. Frans de Waal, a primatologist and animal behaviorist at Emory University, and Kristin ...

Figure 2: Relationships among animal phyla and subphyla with ... and function of immune cells in jawless vertebrates and closely related invertebrates have elucidated, and continue to elucidate ...

and animal-based research continues to be critical in the search for treatments and cures for many diseases including cancer, heart disease, neurodegenerative diseases and infectious diseases. All use ...

"Retrotransposons compose about 40% of our genomes, but nothing is known about how they might have helped animals ... of ...