Goose by Adolfo Cerceda

 From Vicente Palacios's Fascinating Origami.

Master Fox by Adolfo Cerceda

Requires two small cuts for the tail. From Vicente Palacios's Fascinating Origami.

White walrus by Robert Harbin

 From Robert Harbin's New Adventures in Origami.

Tyrannosaurus by John Montroll.

Made from a dollar bill. From John Montroll's Dollar Bill Origami.

Lyra—the Lyre by Yoshihide Momotani

 From Yoshihide Momotani's Origami Constellations.

Four cubes by David Mitchell

 Made from six squares. From David Mitchell's "Origami Heaven" website (http://www.origamiheaven.com/modulardesignsindex.htm)

Sitting Scottie dog by Neal Elias

 From Robert Harbin's Secrets of Origami