Classification is putting living things into groups when they have specific things in common, including the way they look and what they do. These two groups can be split into many smaller ones ...

Classification can help us understand how living things are ... Despite these similarities the two groups of animals are not closely related. Sharks are their own group and breathe through gills.

Like other wolves, these animals were hunted and persecuted on ... lingered over the taxonomic status of red wolves, but their classification has been definitively addressed by a lengthy study ...