Haven't seen any mention of institutions in Mexico (Also a big part of North America) on this thread so far so I'll list some species commonly held there.
Neotropical river otters are held by : Chapultepec zoo (Mexico city - as far as I know this is no longer but was in past), San Juan de Aragon zoo (Mexico city ) , Benito Juarez zoo (Morelia), ZOOMAT (Chiapas).
North American river otter held by : Chapultepec zoo ? (Mexico City-possibly in past ? ) , San Juan de Aragon zoo ? (Mexico city-possibly in past?).
Tayra are held by : Guadalajara zoo ( Jalisco-perhaps no longer held ?) , ZOOMAT (Chiapas).
American badger are / were held by: Leon zoo ( Guanajuato-perhaps no longer held ? ), San Juan de Aragon zoo (Mexico city- this individual died quite some time ago).
Domestic ferret / polecat are held by : Chapultepec zoo (Mexico city).
Lesser grison are held by: ZOOMAT (Chiapas).