Schemes including Equus ferus

• IUCN Red List of Threatened Species. Version 2012.1 (41763) Equus ferus
• IUCN Red List of Threatened Species. Version 2012.2 (41763) Equus ferus
• IUCN Red List of Threatened Species. Version 2014.3 (41763) Equus ferus
• GBIF (4409270) Equus ferus