Akita Mammals - Canidae - Dogs | Fernando Castellanos | Pajarita Extra 2019 - Our Authors
| 16 | Square | Folded by Rui Roda |
Buffalo Mammals - Bovidae - Cows and Buffalo | Fernando Castellanos | Mini Neo 13 | 4 | Square | Folded by Rui Roda |
Bull Mammals - Bovidae - Cows and Buffalo | Fernando Castellanos | AEP convention 2017 | 84 | Square | Folded by Rui Roda |
Bull Mammals - Bovidae - Cows and Buffalo | Fernando Castellanos | Origami USA Convention 2017
| 17 | Square | Folded by Rui Roda |
Butterfly Insects - Butterflies | Fernando Castellanos | Pajarita Magazine 154 | 29 | Square | Folded by Rui Roda |
Cow Mammals - Bovidae - Cows and Buffalo | Fernando Castellanos | AEP convention 2017 | 84 | Square | Folded by Rui Roda |
Cow Mammals - Bovidae - Cows and Buffalo | Fernando Castellanos | Origami USA Convention 2017
| 21 | Square | Folded by Rui Roda |
Crab Crustaceans | Fernando Castellanos | AEP convention 2016 | 123 | Square | Folded by Yara Yagi |
Crab Crustaceans | Fernando Castellanos | Drawing Origami - Volume 2 by Halle, Pere Olivella and Nicolas Terry
| 83 | Square | Folded by Yara Yagi |
Dimetrodon Dinosaurs and Prehistoric Animals - Permian - Dimetrodon | Fernando Castellanos | Christmas Origami Book 2012 | 68 | Square | |
Dimetrodon Dinosaurs and Prehistoric Animals - Permian - Dimetrodon | Fernando Castellanos | Czech Origami Convention 2013
| 79 | Square | |
Dino Dinosaurs and Prehistoric Animals - Unspecified - Generic Dinosaurs | Fernando Castellanos | Pajarita Magazine 132 | 28 | Square | Folded by Yara Yagi |
Dragon Imaginary beings - Dragons | Fernando Castellanos | AEP convention 2016 | 146 | Square | |
Frog Amphibians | Fernando Castellanos | AEP convention 2019 | 123 | Square | |
German shepherd Mammals - Canidae - Dogs | Fernando Castellanos | Pajarita Extra 2019 - Our Authors
| 16 | Square | Folded by Rui Roda |
Hummingbird Birds - Apodiformes - Hummingbirds | Fernando Castellanos | Peru Convention 2011 | 41 | Square | Folded by Rui Roda |
Husky Mammals - Canidae - Dogs | Fernando Castellanos | Pajarita Extra 2019 - Our Authors
| 16 | Square | Folded by Rui Roda |
Kangaroo Mammals - Marsupialia - Kangaroos | Fernando Castellanos | Czech Origami Convention 2018-2019
| 225 | Square | Folded by Rui Roda |
Kangaroo Mammals - Marsupialia - Kangaroos | Fernando Castellanos | Pajarita Magazine 135 | 30 | Square | Folded by Rui Roda |
Lion Mammals - Felidae - Lions | Fernando Castellanos | Pajarita Extra 2020 - Our Authors 2
| 55 | Square | Folded by Rui Roda |
Owl Birds - Strigiformes - Owls | Fernando Castellanos | Bogota Origami Convention 2019
| 35 | Square | Folded by Rui Roda |
Owl Birds - Strigiformes - Owls | Fernando Castellanos | Bolivia Origami Convention 2019 | 38 | Square | Folded by Rui Roda |
Owl Birds - Strigiformes - Owls | Fernando Castellanos | Ooraa OrigamiBox 2019 - Ultimate Origami Convention | | Square | Folded by Rui Roda |
Owl Birds - Strigiformes - Owls | Fernando Castellanos | Origami USA Convention 2019
| 41 | Square | Folded by Rui Roda |
Owl Birds - Strigiformes - Owls | Fernando Castellanos | Pajarita Magazine 145 | 26 | Square | Folded by Rui Roda |
Owl Birds - Strigiformes - Owls | Fernando Castellanos | Pajarita Magazine 118 | 7 | Square | Folded by Yara Yagi |
Owl Birds - Strigiformes - Owls | Fernando Castellanos | Peru Convention 2009 | 23 | Square | Folded by Yara Yagi |
Pteranodon Dinosaurs and Prehistoric Animals - Cretaceous - Pterosaurs | Fernando Castellanos | Bogota Origami Convention 2015
| 177 | Square | |
Pteranodon Dinosaurs and Prehistoric Animals - Cretaceous - Pterosaurs | Fernando Castellanos | Christmas Origami Book 2013 | 25 | Square | |
Rabbit Mammals - Lagomorpha - Rabbits and Bunnies | Fernando Castellanos | Drawing Origami - Volume 2 by Halle, Pere Olivella and Nicolas Terry
| 65 | Square | Folded by Rui Roda |
Rabbit Mammals - Lagomorpha - Rabbits and Bunnies | Fernando Castellanos | Pajarita Extra 2015 | 11 | Square | Folded by Rui Roda |
Reindeer Mammals - Cervidae - Deer and Moose | Fernando Castellanos | AEP convention 2016 | 138 | Square | |
Rhinoceros Mammals - Rhinocerotidae - Rhinoceros | Fernando Castellanos | Pajarita Extra 2015 | 82 | Square | Folded by Rui Roda |
Rhinoceros Mammals - Rhinocerotidae - Rhinoceros | Fernando Castellanos | Pajarita Magazine 140 | 24 | Square | Folded by Rui Roda |
Rose Flora - Flowers | Fernando Castellanos | Mini Neo 32 | 5 | Square | Folded by Rui Roda |
Rose Flora - Flowers | Fernando Castellanos | Pajarita Magazine 142 | 25 | Square | Folded by Rui Roda |
Shark Fish - Sharks | Fernando Castellanos | Bogota Origami Convention 2015
| 216 | Square | |
Shark Fish - Sharks | Fernando Castellanos | Pajarita Magazine 121 | 12 | Square | Folded by Yara Yagi |
Turtle Reptiles - Turtles | Fernando Castellanos | Pajarita Magazine 129 | 13 | Square | Folded by Rui Roda |
Tyrannosaurus Rex Dinosaurs and Prehistoric Animals - Cretaceous - Tyrannosaurus Rex | Fernando Castellanos | AEP convention 2016 | 130 | Square | |
Witch People - Occupations - Witches and Wizards | Fernando Castellanos | Pajarita Extra 2017
| 35 | Square | |
Zaragoza frog Amphibians | Fernando Castellanos | Bogota Origami Convention 2015
| 183 | Square | Folded by Natalia Romanenko |
Zaragoza frog Amphibians | Fernando Castellanos | Pajarita Magazine 124 | 8 | Square | Folded by Natalia Romanenko |