There are SIX recognisable forms which are described below:
- Sarcoids are the most common skin tumour in a horse
- They can affect horses, ponies and donkeys, mules etc.
- They have no breed or colour predisposition. However interestingly, the Lipizzaner breed appears to be totally resistant to them.
- There is definitely a genetic susceptibility
- Flies are implicated in the spread of them
- It is thought that a papilloma virus may be involved, however a specific virus has never been isolated