Bat - flying by Stephen Weiss

Diagrams in Wings and things in Origami by Stephen Weiss
Folded from a square of origami paper

Bat pop-up card by Jeremy Shafer

Diagrams in Mexico Origami Convention 2014
Diagrams in Origami Pop-ups to Amaze and Amuse by Jeremy Shafer
Diagrams in BARF 2002 Summer by Jeremy Shafer
Diagrams in NOA Magazine 518
Diagrams in Origami USA Convention 2003
Folded from a square of origami paper

Vampire bat by Paul Frasco

Diagrams in Fantastical Creatures by Paul Frasco
Folded from a square of unryu