The Arizona black rattlesnake belongs to kingdom Animalia, phylum Chordata, class Reptilia, and order Squamata. It belongs to the family Viperidae, some members of which are the most venomous snakes.

The always-smiling faces, curved toes, and upside-down hangs are characteristic of sloths and many children have discovered just how amazing they are. If you’re looking for the best children’s books ...