| Edward & Jean Raaf |
Great Horned Owl, Otis |
| Grant Rabus |
Humboldt Penguin |
| James & Nita Raby |
Lesser Kudu |
| Brenda Raczynski |
Giraffe |
| Mr. & Mrs. Radeackar |
Snow Leopard |
| Don Radentz |
Nile Hippo |
| Kairi Rader |
Lowland Gorilla |
| Sarah A. Radke |
Grevy's Zebra |
| Tommy Radomski |
Meerkat |
| Ali Raeber |
Grevy's Zebra |
| Drew & Ed Ragsdale |
Lowland Gorilla |
| Brian A. Ragusa |
Amur Tiger |
| Sherry Rahm |
Caribbean Flamingo |
| Gale Rahmoeller |
Snow Leopard |
| Jessica Rainville |
Nile Hippo |
| Mike, Mary & Kelly Rainwater |
Lowland Gorilla |
| Alex Raish |
California Sea Lion |
| Allison Raish |
Humboldt Penguin |
| Michele L. Rambaud |
Hyacinth Macaw |
| Elena L. Ramirez |
Grevy's Zebra |
| Torie Ramlose |
Giraffe |
| Torie Ramlose |
Grevy's Zebra |
| Jeanette Rammelsburg |
African Lion |
| In Memory of Richard Rammelsburg |
Amur Tiger |
| Steve Ramon |
Red Kangaroo |
| Alec Ramos |
Grevy's Zebra |
| Lauren Ramos |
Lowland Gorilla |
| Anne Ramsey |
Grizzly Bear |
| Aaralynn Ranck |
Grevy's Zebra |
| Evan Ranck |
Grevy's Zebra |
| Amy Randazzo |
North American River Otter |
| Barbara Randazzo |
Amur Tiger |
| Gracie Randazzo |
Amur Tiger |
| Claire Elizabeth Randle |
Grizzly Bear |
| Alex Randolph |
Giraffe |
| Rachel Randolph |
Spotted Jaguar |
| Craig Range |
Black-tailed Prairie Dog |
| Bill & Rachel Rankey |
Lowland Gorilla |
| Deborah S. Rankin |
Cheetah |
| Josh Rankin |
Cownose Stingray |
| Kole Rankins |
Grevy's Zebra |
| Louis & Ann Ranzini |
Babirusa |
| C. William Rapp, Jr. |
Lowland Gorilla |
| Emily Rapp |
Grizzly Bear |
| Jeremy Clayton Rappaport |
Warthog |
| Janet Rappe |
Asian Elephant |
| Maddie M. Rasche |
Okapi |
| Jane E. Rasmussen |
Grevy's Zebra |
| Meghan Rasor |
Lowland Gorilla |
| Meghan (Tiger) Rasor |
Grevy's Zebra |
| Meghan (Tiger) Rasor |
Cownose Stingray |
| Meghan (Tiger) Rasor |
Southern Stingray |
| Kitty Ratcliffe |
Snow Leopard |
| Frances L. Rau |
Lowland Gorilla |
| Kent A. Rau |
Speke's Gazelle |
| Susan Rau |
Lowland Gorilla |
| Mirella (Mimi) Ravarino |
Lowland Gorilla |
| Betty L. Rawley |
Panamanian Golden Frog |
| The Rayfield Grandchildren |
Snow Leopard |
| Allie & Emily Rayfield |
Grizzly Bear |
| Rex & Ara Rayfield |
American Black Bear |
| Billy & Scott Rayfield |
Humboldt Penguin |
| In Memory of Rose Raymond |
Grizzly Bear |
| Aidan Reardon |
Grevy's Zebra |
| Evan Reardon |
Grevy's Zebra |
| Berkeley Mueller Rebman |
Humboldt Penguin |
| Don & Neale Keirle Rebman |
Asian Elephant |
| Dan Recklein |
Chacoan Peccary |
| Linda S. Recklein |
Grizzly Bear |
| Jen Redden |
Lowland Gorilla |
| Jane E. Redel |
Chimpanzee |
| Redfearn Family |
Black-handed Spider Monkey |
| Bonnie Redfield |
Lowland Gorilla |
| The Redington Family |
Lowland Gorilla |
| Amy L. Reeb |
Giraffe |
| Sydney M. Reeb |
Asian Elephant |
| Robert L. Reece |
Grevy's Zebra |
| Brandy M. Reed |
California Sea Lion |
| Daniel & Helen Reed |
Grizzly Bear |
| Griffin R. Reed |
Grevy's Zebra |
| Madison Reed |
Giraffe |
| Cindy Reeder |
Grizzly Bear |
| David Reeds |
Lowland Gorilla |
| Crystal Reedy |
Lowland Gorilla |
| Dan & Megan Reeg |
Grevy's Zebra |
| Mr. & Mrs. Jay F. Reeg |
Amur Tiger |
| Matt & Jordan Reeg |
Grevy's Zebra |
| Anne Rees-Holman |
Amur Tiger |
| Trent Reese |
Black Jaguar |
| Lindsay Reeter |
Humboldt Penguin |
| Marion Reeve |
Giraffe |
| Ashley Reeves |
Grevy's Zebra |
| Lilly Rehm |
Asian Elephant |
| Franklyn Reich |
Chimpanzee |
| Carl A. Reid |
California Sea Lion |
| Sarah Reid |
Humboldt Penguin |
| Melissa Reidelberger |
Bar-headed Goose |
| In Memory of Irv Reif |
Snow Leopard |
| Barb Reilly |
Babirusa |
| Shea E. Reilly |
Grizzly Bear |
| Sue & Rick Reilly |
Asian Elephant |
| Philip Reimann |
Grizzly Bear |
| Alicia Reinbold |
California Sea Lion |
| Aggie & Bill Reineke |
Lowland Gorilla |
| The Reinert Family |
Caribbean Flamingo |
| Dennis & Karen Reinheimer |
Giraffe |
| Dennis & Karen Reinheimer |
Red Kangaroo |
| Dennis & Karen Reinheimer |
Galapagos Tortoise |
| Sally Reinholdt & Joe Minor |
Grevy's Zebra |
| Ed Reinholtz |
Humboldt Penguin |
| Steve, Dana Reinke & Genesis Wolff |
Lowland Gorilla |
| Celeste M. Reisch |
Red Panda |
| Celeste M. Reisch |
Fennec Fox |
| The Reise Family |
Snow Leopard |
| Ella Reising |
Rockhopper Penguin |
| In Memory of Helen Reissen |
Giant Anteater |
| In Memory of Walter Reissen |
Somali Wild Ass |
| Angela Reitenbach |
Lowland Gorilla |
| Alma Reitz |
Nile Hippo |
| Andrew Rekart |
Lowland Gorilla |
| Emily Rembecki |
Grizzly Bear |
| Ben Remis |
Lowland Gorilla |
| Sammi Remis |
Lowland Gorilla |
| Lorraine P. Remmers |
Snow Leopard |
| Elizabeth D. Remmert |
Red Panda |
| Michael Remmert |
Indian Blue Peafowl |
| Michael Remmert |
Bleeding Heart Dove |
| Hunter & Sophia Rempe |
Lowland Gorilla |
| Gregory & Nicholas Renna |
Grevy's Zebra |
| Dr. Marvin Rennard |
Warthog |
| John & Mary Renne |
Amur Tiger |
| Eli Reppy |
Lowland Gorilla |
| Jeremy Reppy |
Snow Leopard |
| Sandy Rettelkamp |
Meerkat |
| Caitlyn Rettke |
Snow Leopard |
| Carley Rettke |
Grevy's Zebra |
| Cindee Smalley Rettke |
Puma |
| Kelsey Rettke |
Lowland Gorilla |
| Kyle Rettke |
North American River Otter |
| Ben Reyne |
Somali Wild Ass |
| Elaine Reyne |
Ring-tailed Lemur |
| Thomas Reyne |
Lowland Gorilla |
| Alayna Reynolds |
Grevy's Zebra |
| Carter Reynolds |
Lowland Gorilla |
| David Reynolds & Karen Slaven-Reynolds |
North American River Otter |
| David Reynolds & Karen Slaven-Reynolds |
Grevy's Zebra |
| David Reynolds & Karen Slaven-Reynolds |
Golden-headed Lion Tamarin |
| Jennifer Reynolds |
Lowland Gorilla |
| Joan Reynolds |
Lowland Gorilla |
| Quinn Reynolds |
Ring-tailed Lemur |
| Tegan Reynolds |
Humboldt Penguin |
| Stephanie Rhea |
Nile Hippo |
| Carol Rheinheimer |
North American River Otter |
| Grady & Ashlyn Rhodes |
Lowland Gorilla |
| Natalie Rhodes |
Chimpanzee |
| Gabrielle Rhomberg |
Lesser Kudu |
| Jillian Rhomberg |
Snow Leopard |
| Lorelei Rhomberg |
Black Jaguar |
| Natalie Rhomberg |
Caribbean Flamingo |
| Trudy Rhomberg |
Red Panda |
| Trudy Rhomberg |
Humboldt Penguin |
| Valerie Rhomberg |
Red Panda |
| Valerie Rhomberg |
Fennec Fox |
| Ginny Rhomberg |
California Sea Lion |
| Virginia Rhomberg |
Grizzly Bear |
| Joseph & Stefanie Ricca |
Red Panda |
| Jay Riccabona |
Grizzly Bear |
| Luke Riccabona |
Grizzly Bear |
| Billie L. Rice |
Bateleur Eagle |
| Billie Rice |
Grizzly Bear |
| Billie Rice |
Chimpanzee |
| Billie Rice |
Amur Tiger |
| Billy R. Rice |
Rockhopper Penguin |
| Carolyn Rice |
Naked Mole Rat |
| Gerald Rice & Robert Schultz |
Snow Leopard |
| In Memory of Patrick Rice |
Snow Leopard |
| Jennifer Rich |
Speke's Gazelle |
| Justin Rich |
Babirusa |
| Cheryl Richards |
African Lion |
| Evan Richards |
Grizzly Bear |
| James Richards |
Amur Tiger |
| Jill Richards |
Grizzly Bear |
| Billy Richardson |
Grizzly Bear |
| Dylan Richardson |
Humboldt Penguin |
| Lauren Richardson |
Giraffe |
| Marisa K. Richardson |
Humboldt Penguin |
| Melanie Richardson |
Giraffe |
| Bill Richardson |
Yellow-and-Blue Poison Dart Frog |
| William D. Richardson |
Asian Elephant, Donna |
| Janey Richert |
Lowland Gorilla |
| Roger Richie |
Snow Leopard |
| Marjorie Richtermeyer |
Asian Elephant, Donna |
| Clara Rickard |
Grevy's Zebra |
| Grace Rickard |
Grevy's Zebra |
| Kelsey Ricketts |
Lowland Gorilla |
| Susan Ridenhour |
Cheetah |
| Zoe Ridenhower |
Somali Wild Ass |
| Tammy Ried |
Grizzly Bear |
| Alice M. Rieger |
Cheetah |
| Dave & Yvonne Rieger |
Grevy's Zebra |
| Lauren Whitney Riehn |
Grizzly Bear |
| Susan Riemann |
Amur Tiger |
| Bob & Judy Riepl |
Dusky Leaf Monkey |
| Lt. Joseph B. Rieser USMC |
Grevy's Zebra |
| Sarah Riffle |
Snow Leopard |
| Adelaide E. Rigdon |
North American River Otter |
| Josephine R. Rigdon |
North American River Otter |
| Mr. & Mrs. W. Bradford Rigdon |
Lowland Gorilla |
| Scott Rigg |
Horned Puffin |
| John, Andrew & Abigail Riggs |
Amur Leopard |
| Amanda Rightler |
Chimpanzee, Tammy |
| Heather Rightler |
Chimpanzee, Holly |
| Andrew Riley |
Grevy's Zebra |
