Spinosaurus had a giant skin-covered sail sticking out of its back. Some other spinosaurs had sails, too. Still others had bumps or ridges. …
Spinosaurus hunts in rivers, looking for a feast. It takes a lot of food to fill up this giant beast! …
Most snakes leave their eggs as soon as they are laid. The biggest exception to this rule is a few species of pythons. …
This animal with the spiky back is not a monster. It is a marine iguana—the world’s only sea-going lizard. …