Misc: What french phrase means 'well informed'?

Questions

Because its eyeball is fixed, the ---------- must move its huge body to shift its line of sight.?

Because its tongue is too short for its beak, the ---------- must juggle its food before swallowing it.?

A snake's ---------- is located in the front one-fifth portion of its body.?

A South African ---------- can grow to be 35 inches (90 cm) in length - longer than your arm.?

A species of sponge, called the red sponge, can be pushed through a piece of fabric so that it is broken into thousands of tiny pieces. The animal does not die. Rather, all the pieces reassemble until the sponge returns to its ----------?