This is a list for captive institutions holding duikers (subfamily Cephalophinae) and dwarf antelopes (tribe Neotragini of subfamily Antilopinae) in American and Canadian zoos. Evidence for holding goes back no further than 01/01/2017 for all species. Please add or correct holdings to the best of your knowledge; an updated list will be posted if necessary.
(This wasn't going to be my next list, but a discussion on the Discord chat prompted it and due to the small number of species it only took a couple of hours to compile. Hoping that more mammal lists will be upcoming.)
Duikers
Yellow-backed Duiker (Cephalophus silvicultor) (24 holders)
Baton Rouge
Birmingham
Brookfield
Caldwell
Chehaw Park
Cincinnati
Denver (Zoo)
Houston (Zoo)
Jacksonville
Kansas City
Knoxville
Little Rock
Los Angeles
Memphis
Metro Richmond
Milwaukee County
Naples
Nashville
Niabi
Omaha's Henry Doorly
San Antonio
San Diego (Zoo)
San Diego (Safari Park)
San Francisco
Virginia (Zoo)
Red-flanked Duiker (Cephalophus rufilatus) (7 holders)
Birmingham
Bronx
Brookfield
Gladys Porter
Idaho Falls at Tautphaus Park
Los Angeles
San Diego (Safari Park)
Black Duiker (Cephalophus niger) (4 holders)
Columbus
Los Angeles
Miami
San Diego (Zoo)
Bay Duiker (Cephalophus dorsalis) (3 holders)
Ellen Trout
Miami
Tampa (Lowry Park)
Blue Duiker (Philantomba monticola) (9 holders)
Abilene
Birmingham
Erie
Hattiesburg
Maryland (Baltimore Zoo)
Northeastern Wisconsin (NEW Zoo) (Green Bay)
Safari West
San Antonio
Tampa (Lowry Park)
Neotragini
Kirk’s Dik-dik (Madoqua kirkii) (13 holders)
Baton Rouge
Brookfield
Honolulu
Kansas City
Little Rock
Maryland (Baltimore Zoo)
Metro Richmond
Roosevelt Park
San Antonio
San Diego (Zoo)
San Diego (Safari Park)
Topeka
Wildlife Safari (Oregon)
Günther's Dik-dik (Madoqua guentheri) (1 holder)
Cameron Park
Klipspringer (Oreotragus oreotragus) (13 holders)
Albuquerque (Zoo)
Brevard
Brookfield
Cleveland Metroparks
Dallas
Honolulu
Jacksonville
Lincoln Park (Chicago)
Memphis
Metro Richmond
Omaha's Henry Doorly
San Diego (Zoo)
Staten Island
Steenbok (Raphicerus campestris) (2 holders)
Disney's Animal Kingdom
San Diego (Safari Park)
(This wasn't going to be my next list, but a discussion on the Discord chat prompted it and due to the small number of species it only took a couple of hours to compile. Hoping that more mammal lists will be upcoming.)
Duikers
Yellow-backed Duiker (Cephalophus silvicultor) (24 holders)
Baton Rouge
Birmingham
Brookfield
Caldwell
Chehaw Park
Cincinnati
Denver (Zoo)
Houston (Zoo)
Jacksonville
Kansas City
Knoxville
Little Rock
Los Angeles
Memphis
Metro Richmond
Milwaukee County
Naples
Nashville
Niabi
Omaha's Henry Doorly
San Antonio
San Diego (Zoo)
San Diego (Safari Park)
San Francisco
Virginia (Zoo)
Red-flanked Duiker (Cephalophus rufilatus) (7 holders)
Birmingham
Bronx
Brookfield
Gladys Porter
Idaho Falls at Tautphaus Park
Los Angeles
San Diego (Safari Park)
Black Duiker (Cephalophus niger) (4 holders)
Columbus
Los Angeles
Miami
San Diego (Zoo)
Bay Duiker (Cephalophus dorsalis) (3 holders)
Ellen Trout
Miami
Tampa (Lowry Park)
Blue Duiker (Philantomba monticola) (9 holders)
Abilene
Birmingham
Erie
Hattiesburg
Maryland (Baltimore Zoo)
Northeastern Wisconsin (NEW Zoo) (Green Bay)
Safari West
San Antonio
Tampa (Lowry Park)
Neotragini
Kirk’s Dik-dik (Madoqua kirkii) (13 holders)
Baton Rouge
Brookfield
Honolulu
Kansas City
Little Rock
Maryland (Baltimore Zoo)
Metro Richmond
Roosevelt Park
San Antonio
San Diego (Zoo)
San Diego (Safari Park)
Topeka
Wildlife Safari (Oregon)
Günther's Dik-dik (Madoqua guentheri) (1 holder)
Cameron Park
Klipspringer (Oreotragus oreotragus) (13 holders)
Albuquerque (Zoo)
Brevard
Brookfield
Cleveland Metroparks
Dallas
Honolulu
Jacksonville
Lincoln Park (Chicago)
Memphis
Metro Richmond
Omaha's Henry Doorly
San Diego (Zoo)
Staten Island
Steenbok (Raphicerus campestris) (2 holders)
Disney's Animal Kingdom
San Diego (Safari Park)