| Specie | Breed |
|---|---|
| Sheep | North Country Cheviot |
| Sheep | North Ronaldsey |
| Sheep | Ouessant |
| Sheep | Oxford Down |
| Sheep | Poll Dorset |
| Sheep | Portland |
| Sheep | Racka |
| Sheep | Romanov |
| Sheep | Romney |
| Sheep | Rouge de L'Ouest |
| Sheep | Ryeland |
| Sheep | Scottish Blackface |
| Sheep | Shetland |
| Sheep | Shropshire |
| Sheep | Skudde |
| Sheep | Soay |
| Sheep | Solognote |
| Sheep | South Down |
| Sheep | Suffolk |
| Sheep | Sussex Merino |
World domestic breeds data
