Sand tiger sharks are brownish-gray with rust-colored spots on top and white underneath. They have a flattened, cone-shaped snout and a distinctive, oblong tail with a notched, upper lobe that is ...

dog-sized marsupial with tiger-like stripes down its back and a rigid, kangaroo-like tail. Native to Tasmania, Australia and New Guinea, it hunted small to medium-sized animals and led a solitary ...