Farmer who imported illegal Asian sheep testicles to sell to animals could be jailed
Fines for selling Asian sheep can amount to hundreds of thousands of dollars
To prevent both the spread of disease and hybrid cross-breeding in native sheep, it is illegal in Montana
The farmer who secretly bought parts of the world's largest sheep is now facing jail
Bought parts of a protected mutant species to breed animals, which he could sell for up to $10,000 (about £8,000)
Schubarth faces a maximum sentence of five years in prison and a $250,000 fine for each count
As well as being an internationally protected species, Marco Polo sheep have been bred in Montana to protect native sheep from disease