Flamingo by Itsuki Minami

From Makoto Yamaguchi's New Generation of Ultimate Origami.

Geometric Origami Pot/Box from Paper Kawaii

 Geometric pot (variation of "Verdi's Vase" by Verdi Adams—see https://origamibob.blogspot.com/2020/04/verdis-vase-traditional-chinese.html).

From the Paper Kawaii website: https://www.paperkawaii.com/geometric-origami-pot-box-tutorial/

Secret Stepper Box from Paper Kawaii

 Secret Stepper Box. Diagrams were sent to me as a gift for joining the mailing list for "Paper Kawaii" (https://www.paperkawaii.com/). Made from one 11"-by-7.333" rectangle and five 5" squares (plus some two-sided tape to hold it together)

Moose by Fumiaki Kawahata

 From Fumiaki Kawahata's Realistic Origami Animals.

Elephant by Scott Wasserman Stern

 From Scott Wasserman Stern's Outside the Box Origami.

Alpaca by Fumiaki Kawahata

 From Fumiaki Kawahata's Realistic Origami Animals.

Skull by Scott Wasserman Stern

 From Scott Wasserman Stern's Outside the Box Origami.

Lizard by Justin Nachsin

 From Tadashi Mori's YouTube channel at https://www.youtube.com/watch?v=ixSp1pwvfm4

Pig by Jo Nakashima

 From Jo Nakashima's YouTube page at https://www.youtube.com/watch?v=3gZR2Tz4WFY

Squirrel by Jo Nakashima

 Paper too small and too thick, ears too small, face kind of a mess. From Jo Nakashima's website: https://jonakashima.com.br/2018/09/24/origami-squirrel/

Katze/Cat by Anna Kastlunger

 From the Origami Austria website http://www.origamiaustria.at/en/diagrams.php. (Diagrams at http://www.origami.at/diagrams/katze.pdf.)

Hummingbird by Andrés Plazas

 Found online at https://www.origamispirit.com/2011/02/an-easy-to-fold-origami-hummingbird/

Styracosaurus by Fumiaki Kawahata

 From Fumiaki Kawahata's Dinosaur Origami.

Fish by Beth Johnson

From Makoto Yamaguchi's The Elegance of Origami.

Reedcutter locust (yoshikiri?) by Yoshihide Momotani

 From Yoshihide Momotani's Origami Insects.

Bulldog bookmark by Christine Edison

 From the (apparently now defunct) blog "Flotsam and Origami Jetsam," entry of 15 August 2010 at https://cedison.wordpress.com/2010/08/15/bulldog-bookmark-instructions/

(This entry was made in State College, PA, on the eve of the annual AAUW book sale, hence the choice of subject matter, although I suppose it could equally well have been to commemorate a dog show.)

Otomo No Kuronushi (traditional; from the Kan No Mado)

 From Robert Harbin's New Adventures in Origami. (Really bad image of) pattern from the Kan No Mado taken from David Mitchell's "Public Paperfolding History Project" on his "Origami Heaven" website at http://www.origamiheaven.com/historyindex.htm

Otter by Makoto Yamaguchi

 From Makoto Yamaguchi's The Elegance of Origami.

Penguin bookmark by Jo Nakashima

 From Jo Nakashima's YouTube channel at https://www.youtube.com/watch?v=xdKdRxYBx1g&ab_channel=OrigamiwithJoNakashima

Mount Fuji by Jo Nakashima

 From Jo Nakashima's website at https://jonakashima.com.br/2019/04/16/origami-mount-fuji/

Teddy Bear by ??

 Made with two squares (one of them a third smaller along the side) and a tiny bit of double-sided tape. From an online blog called (apparently) "Goo Blog". My figure doesn't quite match the one in the diagrams. (https://blog.goo.ne.jp/shun2cb/e/271baaae336857efd73e204b5cc7cb7f). My Google Translate skills are not good enough for me to figure out the name of the creator.

Scarab beetle by Fumiaki Kawahata

 From Fumiaki Kawahata's Origami Beetles of the World.

Maple Leaf 2 by Takuji Sugimura

 From Takuji Sugimura's Origami Greetings.

Stegosaurus by Yoshihide Momotani

 One square of gold foil-backed paper. From Yoshihide Momotani's Origami Dinotopia.

Regular tetrahedron skeleton by Tomoko Fuse

 Made with 6 squares. From Tomoko Fuse's Three Dimensional Karakuri (Origami Land). (Not sure of the translation; another source calls it "Three Dimensional Trick-Unit Origami". I thought "karakuri" were Japanese automata.)

Cruising Boat by Yoshihide Momotani

 Made from a 2 x 1 sheet of paper. From Yoshihide Momotani's Origami Ships.

Modern Cube by Kunihiko Kasahara

 Made with two squares (one a little smaller than the other). From Kunihiko Kasahara's Origami Discovery 2: World of the Cube.

Sunflower by Tomoko Tanaka(?)

From Tomoko Tanaka's Origami Shikishi Hundred Flowers ["shikishi" = colored paper?]

Center is made from a separate square of paper.

 I'm unclear about the authorship of this model and book. I think it's either jointly authored by Tomoko Tanaka and Makoto Yamaguchi, or else Yamaguchi was the editor. (Yamaguchi owns "Gallery Origami House," the publisher.)

Bulldozer by Yoshihide Momotani

 From Yoshihide Momotani's Origami Vehicles.